Ansem Posted October 28, 2012 Posted October 28, 2012 For our hypothetical organism with two chromosomes, A and B, when two members of the species reproduce, how many possible combinations of chromosomes are there for the offspring? halp
peener weener Posted October 28, 2012 Posted October 28, 2012 Baby gets one chromosome from mommy and one from daddy. That's 2 different possibilities from mommy, 2 from daddy, 2*2 = 4 combinations per chromosome. Two chromosomes, A and B, mean 4^2 = 16 possible combinations altogether. I've got the answers for the other three questions too.
Original Alear Posted October 28, 2012 Posted October 28, 2012 Baby gets one chromosome from mommy and one from daddy. That's 2 different possibilities from mommy, 2 from daddy, 2*2 = 4 combinations per chromosome. Two chromosomes, A and B, mean 4^2 = 16 possible combinations altogether. I've got the answers for the other three questions too. I think you got it right, but I think it's worth saying that each gamete from each parent containing 2 chromatids isn't the same thing as each gamete comparing one chromosome (which can be inferred from "one chromosome from mommy and one from daddy"). It's not like the chromosomes split into chromatids, combine into chromosomes before the zygote gets fertilized - that would mean crossing over before fertilization, as opposed to after. I'm not even sure that you can assume a "mommy" and a "daddy" as opposed to two parents in this instance. If you did, the assumption of sexually differentiated chromosomes would probably need to be in the problem for you to be right. HEY ITS BEEN A DAMN LONG WHILE SO SORRY FOR FINNICKING, especially if I'm wrong. To be honest, I am not smart enough to answer the question. I don't know if "two chromosomes, A and B," means each organism has chromosome A or chromosome B, or it means each chromosome has one of the two. And I don't know if all chromosome As are assumed to be identical, and all Bs are assumed to be identical. Could be all those things are irrelevant. Necktie is probably right.
Original Alear Posted October 28, 2012 Posted October 28, 2012 i just copypasted the answer sir That's why I said you were probably right.
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