Wednesday, February 10, 2010

Why were true-breeding pea plants important for mendel's experiments ?

last question for now :]Why were true-breeding pea plants important for mendel's experiments ?
Back during the time of Mendel, people didn't know how or why or the chances of different traits being passed on from generation to generation, but they knew it happened.





Mendel wanted to find out what traits were passed, why they were passed, and the chances of them being passed on.





True-breeding pea plants were important because he didn't want mixed results. He wanted clear cut alternate forms of traits (yellow vs green, round vs wrinkled, etc), he wanted controlled matings and reciprocal crosses (for control over parental influence), and he wanted pure breeding lines as well as a controlled environment.





He took into account everything that may have played a role in his experiment, and because of it, he was able to come up with the results that he did.Why were true-breeding pea plants important for mendel's experiments ?
Because all of the offspring would produce the same color type. Had they been heterozygous, it would've produced both white and purple flowers.

Sunday, February 7, 2010

Is it true that ALL straight girls at least had experimented lesbianism(kissing is part of that) or fantasize?

So does this means there are no straight girls out there because even if you think about doing you're not 100% straight. I don't believe it's just a thought thing or it's ok with girls thing. Because I don't ever think about being with another guy. The thought of that makes me sick, so I'm in the category of 110% straight with no compromise whatsoever. So my question is are there any girls out there who would never ever cross that line who are completely 110% into men and find lesbian thing disgusting??? Or is it that 110% straight girl don't exist?Is it true that ALL straight girls at least had experimented lesbianism(kissing is part of that) or fantasize?
I have never kissed a girl or experimented or even wanted too. the only time i have kissed a woman is when i was little and would kiss my mom goodnight. that's a bad assumption, to think all women have done that. I like men way too much to do anything sexual with a girl. I wont even do a 3 some cause i cant stand the though of a girl touching me. eewww. lol so I'm 110% straight.Is it true that ALL straight girls at least had experimented lesbianism(kissing is part of that) or fantasize?
I'm a 110% straight guy and I'm so pleased to see that answer.Mr I'm honest u are exactly my type and i also have been going through this problem for so long and wow i got a great answer from this 110% straight woman squeaker.

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Any female over the age of 21 who says they havn't atleast thought about it is lieing.





And there is no such thing as a 100% straight guy either with your theory. Penis envy can be considered a gay tendancy, so can homophobia...a nd a few other things...
Two straight girls might be easier to experiment than two straight guys but not all straight girls think about doing that.
nope....proud to say that ive never done anything like that
I think it just depends on the girl. I think, generally, girls are better kissers -- they know how a girl would want to be kissed. I've never tried being intimate with a girl, but I imagine it's not terrible. And yes, I've had lesbian dreams, but I'd never ';become'; a lesbian. I like men. Women don't have the essentially plumbing I want and need. That's all it comes down to. My husband has become a damn good kisser and he's great in bed. I'm happy! Plus, i could never get into that ';butch'; look. It grosses me out.
I am 110% straight...only into men
I CANT SPEAK FOR ANYONE BUT MYSELF...I'VE NEVER DONE IT BECAUSE THE STICK IS GOOD...I KNOW LOTS WHO HAVE, BUT THAT DOESNT MEAN ALL ARE...WE'LL SEE...
I believe that the majority of females at some point in their life (young or old) have either questioned being bisexual or being a lesbian. I would even go as far as saying they have probably fantasized about some female in their past, present or future. This is my opinion though.
My current girlfriend told me that she and one of her friends kissed so they'd be ready for guys to do it. Not really lesbian...just preparation for dudes.
Kinsey's (did a sex study in the 1950's) though that there was a minority of people who were either totally straight, or totally gay (like about 10 percent) with the remaining 90% distributed somewhere between the two extremes.


I'd say I agree with that.


It's much more acceptable for females to be sexually attracted to other females (at least in western cultures), so basically they're allowed to show it without as much repercussion.


Plus, women tend to be more affectionate than men.


It's tough to say how much of this is genetics, %26amp; how much is social conditioning, but I'd agree; every girl I've known well (or been in a relationship with) has either done something sexually with another girl, or fantasized about it.


Very common.


You also can't understate the fact that women are very sexualized in our culture; sexy ads, billboards, commercials, etc. I'm not criticizing that, but i'm sure it has an effect on this factor.
Oh, we exist. I have never wanted to have any kind of sexual relationship with a woman. I just think that women are more excepting of it than men. Men are totally grossed out by it but, women seem not to care as much. If two females want to be involved sexually with each other that is their business. But, it's not for me.
I could never see my self with another girl. i am 110% straight.

Why were true-breeding pea plants important for Mendel's experiments?

Had Mendel chosen corn or flowers or most other plants, he would not have been able to identify homozygotes and heterozygotes.





Not many other plants have such clear delineations, for example, when certain types of roses are cross-bred, say a red and a white, often, their offspring share co-dominant alleles with a phenotype that is pink. Whereas, pea plants are very simple and made only green or yellow peas (homozygotes or hetrozygotes)--no blending occurs in this plant.Why were true-breeding pea plants important for Mendel's experiments?
Mendel always started with true-breeding peas. This way the parents were ';knowns'; and nothing surprising popped up. This is one of the main reasons why Mendel was able to figure out the basic rules and laws that govern genetics.

True or False: Black slaves were used in medical research and experiments?

You didn't even have to be a slave.





The Tuskegee Study of Untreated Syphilis in the ***** Male was a clinical study, conducted between 1932 and 1972 in Tuskegee, Alabama by the U.S. Public Health Service. They recruited 399 poor, mostly illiterate, African American sharecroppers.True or False: Black slaves were used in medical research and experiments?
It sounds true to me from having read the answerers above about the syphilis vaccine. It sounds like when Hitler injected Jewish women so that they would become infertile. It is sick, inhumane and sad. I cannot comprehend why or how one human being could do that to another human being. Where was their conscience?True or False: Black slaves were used in medical research and experiments?
True





and they wasnt even slaves. Look up the Tuskeegee Experiment, its went on well into the late 1970's on free black people; they administered syphillis to us and told us it was ';vaccines';





That's why I'd never immediately write off anyone who says that the government administered AIDS. Considering the completely outrageous things that the government has done in the past I wouldnt be suprised at all if they was behind this one.





It seems a lil too convenient that AIDS only greatly affects the following populations


1) Black people %26amp; other ';bad'; minorities


2) poor people


3) Gay people


4) Russians (AIDS is skyroketing in Russia, but no other European nation)





all populations that our right-wing government has disliked.
False, they were viewed as property and were expensive. However, after they were freed they were the subjected to experiments like the ones done by the government at Tuskeegee.
Recultantly I would say yes. A slave wasn't even considered human, so the rights that these white people protest for now to stop animal testing on monkeys and rats, their ancestors were doing on my ancestors. With no chance of having protestors saving their limbs.
True.
Very true


Slaves were used to do whatever they didn't want to do themselveds. Dangerous medicine was part of this.
I've read lots of history. No mention of that.





If true, you can bet someone would be blasting it all over the world.





Nothing negative against USA would be wasted.
Ever hear of the ';Tuskeegee Incident'; where they injected black men with syphillis to see what effect it would have on them, and then left them to suffer and die?








Yeaaaa for science!!!!!!!!
NO.





they used aboriginals though.
Blacks were used as guinea pigs long after slavery.
i dunno.. true ?
I'm not quite sure! I do know, however, that that occurred during the holocaust!





EDIT: Interesting question! You get a star! Yay! lol :)
True! So were caucasion and every other race on this earth!
false , but i am not totally sure but have not heard of it before
i kno asians and jews were fa sho. cuz i learned it in history class couple a weeks ago. but blacks??? i dunno bout that one cuz idk if there was that much science stuff goin on back in that time period
False
True of course.
Of course, They had no right what they chose to do.
true
Its obviously true. back in them days they could do what ever they want.
False.


Stop crying over slavery.


Yes, it's sad that they were once slaves and they were mistreated in the past, but that was the past and bad memories should be buried.


It's not like you were a slave yourself, or any other blacks right now in the US, so I don't know why blacks live with ';anger'; and ';grudge';. Learn to move on and live a normal life. Stop rapping about all the negative things in the world, because the only negative things are your kinds, and not the world around you
False





I don't see the government keeping people in cages like lab rats
  • network security
  • So brain transplants are laughable ridiculous science fiction experiments that will never come true?

    Well that's what 99.99% of the great scientific community was saying before this: http://www.youtube.com/watch?v=5JNmlqjLe4A


    that keeping either of the brain or the body to be harvested alive during this process is impossible, yet it was done.


    Now they say that it would be impossible and ridiculous because scarred nerve tissue does not heal and cannot be regenerated, and as usual they will find themselves proven wrong again.





    The only true barrier to brain transplants that I can see is this 'scientific community' that keeps yapping about ethics and opposes anything new and revolutionary.So brain transplants are laughable ridiculous science fiction experiments that will never come true?
    First, there is a difference between a brain transplant and a head transplant (either would probably be better described as a body transplant). With a head transplant you would at least be able to preserve sight, smell, taste, hearing, and ability to communicate (through blinking or face movement).





    If you did a successful brain transplant by getting blood flow established from a different body you would have a very hard time knowing that it was successful as there would be no way to communicate and no easily appreciated brain output. I suppose the presence of EEG activity would be some measure of ';success';. If consciousness persisted it would be hard to assess and thoughts would almost certainly turn to madness in short order.





    With either a brain or head transplant there would be no motor or sensory function below the neck, no voice, and no respiration. Maybe someday those can be at least partially overcome.





    The ethics of performing the rather gruesome experiments needed to ';succeed'; are, at minimum, worthy of debate. Especially in light of the lack of any desire for current human application.So brain transplants are laughable ridiculous science fiction experiments that will never come true?
    the only reason to transplant someones brain would be if you had two people one of whom irretrievably dead but with a working body and someone with an alive brain but a dead body such a patient would probably be in cardiac arrest hypothermic with extensive myocardial ischemia and peripheral tissue death however cardio-pulmonary bypass would most likley be required to prevent brain death and if a suitable donor could be found rather than take the whole body the most the patient would need is a heart transplant and amputation of the dead tissue meaning that the rest of the organs can be given to people who need them in short may be theoretically possible but will always be impractical
    Dr. T-J is right.





    Anybody who knows even the slightest thing about neuroanatomy and physiology knows that it's just not physically possible.





    Somehow, I don't think that reality enters into your opinion on the subject, though....
    Yes. More laughable and scientific community is open minded.
    I don't tknow about that: I think I may have met some of the people where it didn't work.
    its been done in the ussr
    Yes ethics come into play, and so they should, however you don;t have a scientific background do you?





    Central nervous tissue (brain and spinal cord) can not regenerate, this is why we have disability and why we are looking into stem cell research for the treatment of said disabilities and diseases.





    This means that though you are able to stick someones head on your own and connect the blood vessels, there are too many nerves in the spinal cord to connect, and they will not regenerate on their own like peripheral nervous tissue does.





    Maybe in the future if stem cell treatment works we may be able to trasnplant full human heads, however don't count on it happening in your lifetime, and again ethics will come into play - so they should. especially if stem cell research works, then no one will need a head transplant - as we will be able to regenerate brain/spinal cord tissue through the stem cells.





    I think your just a hippie that needs to take some lessons in science, preferably degree level medical science before you start to question the community.
    If this was actually true it would be headlines around the world. it is more likely that a tissue transplant would occur. If someone placed my brain in someone else's body it would have my memories - that person would cease to be who they were and would become me. Don't believe everything you see on You Tube - a lot of it is pure BS.





    Transplanting a monkey's head is one thing - transplanting a human head with spinal cord linkages? Its news that they can transplant a face - transplanting a head is not technologically possible at this time. As to your statement that the scientific community ';keeps yapping about ethics'; I refer you to the medical advances of Josef Mengele - you need ethics in science or it becomes horrific. The scientific community does not oppose anything new and revolutionary, but the scientific community does demand proof and not just speculation. Welcome to science.

    Is it true that most men have at some time in their life had a gay fling or at least ';experimented'; when young?

    i was surprised to read this, but i must admit that i also am no exceptionIs it true that most men have at some time in their life had a gay fling or at least ';experimented'; when young?
    Ho !yes ive had 5 in the last 10 years.Is it true that most men have at some time in their life had a gay fling or at least ';experimented'; when young?
    I'm not a guy, but many people, both male and female have had conflicting thoughts towards the same sex. This usually happens while they are teenagers, and puberty is setting in. A person goes through lots of hormonal changes during their teenage years, so it's only natural if a person isn't sure about their sexuality during that time.





    It doesn't happen to everyone of course, but it's not out of the ordinary.
    I wouldn't think so.





    Men like to hold this masculine image, and to have a gay fling would be to surrender that image.





    Women are much more prone to experimenting.








    But who knows,





    I've known some pretty horny guys who I wouldn't be surprised if they did a little experimenting themselves.
    I don't know about a fling but as kids we experimented cause we did not get to play with the other sex till a little later. Many women And Men I have known have admitted to having some type of contact wanted or unwanted with the same sex and the opposite. Anyone have an uncle or aunt they can remember that they could not stand?
    im going through something very similar right now...and idk what to do...come out of like just let it be because its only a phase you know...what if its just a phase and it means nothing in the future? so im not telling...but im a girl and its MOSTLY common in girls...im not to sure about boys. i boy has to be completely POSITVE to come out to something like that.
    just because most have, doesn't make it right. i know that i only want to be with girls, but those thoughts occasionally creep in and i try hard not to entertain them.
    not really for me. But a spose some people do it although there straight. if you do it and you no your straight then thats ok riiiiiiight.
    been in a suituation where i was ';offered';...but i hightailed it outta there. If it doesnt turn you on...it doesnt turn you on.
    I'm not a guy but I think so! Because girls do! You have a lot of men and women that are bi-curious who want admit it
    I imagine, especially in this 'day and age', that a lot of men do. However, if it's 'most' I really can't say...
    I'm no exception either
    Mostly all guys do... mostly all girls do too
    NO that is so ridiculous.
    Not bloody likely.
    not most but maybe some
    hell no for me
    No..let me see where you read that from.
    Where i come from nobody would dream of doing this for fear of getting smashed
    No, I would like to see a link to this study please.
    this is the dumbest question on yahoo answers ever. Hell.......................no.





    and one of the funniest.
    Not me. Women all the way.
    im 15, and no guys i know have, but maybe they will.... haha
    what kinda question is that, hell no!
    no
    No, not me. i think it is much more common for women though.
    No. n I dont think any man should either

    Is it true that ALL straight girls at least had experimented lesbianism(kissing is part of that) or fantasize?

    So does this means there are no straight girls out there because even if you think about doing you're not 100% straight. I don't believe it's just a thought thing, it's ok with girls thing, or just an experiment thing. Because I don't ever think about being with another guy. The thought of that makes me sick, so I'm in the category of 110% straight with no compromise whatsoever. So my question is are there any girls out there who would never ever cross that line who are completely 110% into men and find lesbian thing disgusting??? Or is it that 110% straight girl don't exist?Is it true that ALL straight girls at least had experimented lesbianism(kissing is part of that) or fantasize?
    lol, I have NEVER kissed, fantasized, dreamed, or looked too hard at a female, that's disgusting. When I was in High School, if I even thought a girl was looking at me the wrong way, I would kick her ***. The thought of lesbians, or even bisexuality creeps me out.Is it true that ALL straight girls at least had experimented lesbianism(kissing is part of that) or fantasize?
    Wow Finally there's a real means(100%) straight woman which is extremely seldom to me.


    I'm a straight guy and i also have the same curiosity like the asker.Finally i must say that there are very few 100% straight women remaining.

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    That's just toooo wide of a range... All? never... Plenty... Yes...
    Well I have experimented recently. I have kissed my best friend Cindi and we have started to touch each other, not all the way but pretty close. having said that I think that Tom in our class is a hunk. Where does that leave me?
    OMG...





    You're such a spaz... wait...





    You're such a male.





    Pick one... that's you!!
    I'm 110% straight, never tought about it, never tried it - hate it
    nobody in this world is 100% str8. Everyone has experimented at one point in their lifetime - or had extremely powerful urges to experiment.
    No most girls that say that are lying.
    My mom and my sister. I don't think they ever have, or ever will ';experiment'; not all women do that. Its their preference. If they want to do it fine by me. There are many 110% straight woment out there.
    i can confirm i have never kissed or fantasized about kissing a female!!! lol
    hmmm its true
    Creeper why would u even ask such a question?? There are tons of girls who cringe at the thought of kissing another girl but even if they do it doesnt mean they are lesbian at all. Many people do it for attention or because they think its funny? But in my opinion its gross.
    Maybe most straight white girls. Also, just thinking about something doesn't make you anything. If I thought about what it was like to be a rocket scientist for a moment, doesn't make me 10% rocket scientist.
    Turn it around. If there are any gay/lesbian folk out there who've never had any thoughts or fantasies of being with the opposite gender, does it mean they are straight?





    Since your question's apparent conclusion and the one I poised cannot both be true, it shows a problem in the question itself.





    All people fall somewhere in a continuum as to sexual attraction. If you are predominately and primarily attracted to members of your gender, then you are gay/lesbian. If you are predominately and primarily attracted to members of the opposite gender, your straight. If your feelings aren't quite so polar, then you have bi tendencies.





    When you talk about your own ';110% straight';, what I hear is a strong cultural component. You are afraid of anyone considering you even slightly homosexual. This means if you ever had even the slightest attractions, you'd have suppressed it so tightly you wouldn't know. That doesn't mean you're not straight, only that you are so afraid of being perceived as homosexual, you're not a good judge of it.
    Well, see, when girls get a little tipsy some of them tend to need attention. They start kissing other girls hoping that there is 100 guys fantasizing about it. It's just an attention getter, doesn't mean the girl is lesbian.
    This question is getting played out.
    you don't realize how percentages work very well, do you. you can only be 100% of something. you can only be all (100%) of yourself.
    I've never, ever, ever kissed a woman, had fantasies or anything remotely lesbian. I'm not against it, it's just I love men.





    One of my husband's friends poised that same question not too long ago to me, and he didn't believe that there could be women out there who have not have not had a lesbian experience. I guess some guys just like to think that.
    i dont know if its all


    But I know plenty of straight girls that have experimented


    some of them found out they were straight


    But some....quite a few


    found out otherwise
    Okay, I have answered something like this before and, obviously, you have never seen Ron White's stand up joke on this.





    It goes, and I totally agree with it, that sexual orientation falls on a continuum with lesbian at one end, straight in the middle, and gay on the other end and we all fall somewhere on the continuum.





    Ron White said that he had a male friend make a comment about how disgusting gay men are and Ron ended saying that we are all homosexual to some extent and the friend said that he was 110% straight and Ron countered with this:





    Do you watch porn? Friend: yes


    Ron: When you watch porn do you watch only girl on girl? Friend: No, I like to watch a man and woman making love.


    Ron: When the man and woman are making love, do you care if the man's penis is flacid or hard and throbbing?


    Friend: Of course, his penis should be hard and throbbing.


    Ron: So you like hard throbbing c*cks!


    Friend: I never knew that about myself.





    (okay, not exactly word for word but you get my point)
    NO its not true.
    good question..i guess....i consider myself striaght...but i do fantasize about women...they are hot and sexy...what can i say? i think i'm pretty hot and sexy too. I made out with a girl once....it was at a party...and the guys dared us too...it was fun and different..i liked it. But, i can't see myself dating a women...i just think it might be hot to sleep with one...so maybe it makes me bi curious...open minded...not really sure...guess according to you though, i am not 110% striaght.:)