List all the different gametes that are possible from the following genotypes.

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Question

List all the different gametes that are possible from the following genotypes.

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Accepted Answer

Hi, everyone. Welcome back. Let's look at our next question. It says how many possible different gametes can be produced from the genotype? Big B, little B, big C, little C, big D, little D. So in our genotype, we have three different genes. Hetero Zigo's for each one. And there's a formula for calculating how many possible different damage you can get from a given genotype. And that is that it equals two to the end where N is the number of hetero cygnus pairs. So in this case, and will equal three because B C and D, all our heterocyclic spares if for instance RD was little D, little D. So it's a homocide despair and would only equal to B and C would be a hetero six pair D wouldn't count. It's a homocide despair. So since an is three, our number of possible gametes equals two to the third power, which equals eight. And when I look at my answer, choices, I see that choice A is eight. So that's going to be my answer. I'll Cross Out Choice B 10, C6 and Choice D five. And if you want to see exactly how like, so you don't feel like you're putting, using this formula sort of a magic box and you want to see how we come up with that 8. 1 way you can think of it is if we start with idea that our, our parents can generate. Uh So we have big B little B so our gamut could have either Big B or a little B in it. So I've drawn a little sort of carrot shape with lines going from Big Beat two Big B and Little B. And now if our gamin has Big B that could be paired with either underneath that, I've drawn Big C or Little C. And then again, in each case. So now I have, I can trace down these lines and get to say big B, big C. Well, that could then have big D or little D. So I'm kind of making a tree structure here. So then again, I have on my Big B and I had Big C and Little, see my Little C could be paired with either big D or little D. Now I go to my other side of my little tree diagram where I have Little B that could also be paired with either big C or little C. And then each of those seeds could be paired with big D or little D. So I end up with sort of three tiers of my tree reflecting all the different possible combinations and I could trace down the tree to create the different combinations. And I can see by counting down at the bottom That's going to give me eight possibilities. And if I want to list them out, I could list again, going down from top to bottom my tree B C D. In that order, I have big B big C, big D and then big B, big C little D, then big B little C, big D, big B, little C little D. Now on the other side of my tree where I start with little B, I have little B big C, big D, little B, big C little D, little B, little C, big D and little B little C little D. So those are my eight different possible gamma types. That's how we arrive at an answer. But again, you can use that to, to the end formula if you want sort of a shortcut to that. So again, possible, different gametes produced from the genotype. Big B little B big C little C big D, little D choice A eight. See you in the next video.

List all the different gametes that are possible from the following genotypes.

AabbCcDD

Verified video answer for a similar problem:

Key Concepts

Gametes

Alleles

Independent Assortment

List all the different gametes that are possible from the following genotypes.AabbCcDD

Verified video answer for a similar problem:

Key Concepts

Gametes

Alleles

Independent Assortment

List all the different gametes that are possible from the following genotypes.

AabbCcDD