An organism having the genotype AaBbCcDdEe is self-fertilized....

Question

An organism having the genotype AaBbCcDdEe is self-fertilized. Assuming the five genes assort independently, determine the following proportions:

Progeny that are expected to have the genotype AabbCcDdE–

Accepted Answer

Hi, everyone. Let's look at our next problem. It says, suppose we have a purple, big C and tall, big D P plant that is dominant over white and short variants. If a pea plant with a big C little C, big D, little D genotype is allowed to self fertilize how many offspring will be hetero zigo's for the two traits. And we have answer choice is of a 2/16. B 12 16th, C, 8/16 and D 4/16. So here we have the two parents hetero six in both traits. That's our cross here. Big C little C, big D, little D cross the big C little C, big D, little D and let's look at our pen it square to find out how many offspring are heros, I guess in the two traits. So we're gonna have a 16 square peg it square and well, right across the top and side are parental gametes are parental gametes, possible combinations. So I'm just going to post up here that Punnett Square, I'm going to have it filled in, just gonna have to watch me ride them all in just a moment. I'll put it up here So across the top the parental gamut, possible combinations are big C, big B, big, C, little D, little C, big D and little C, little D. Then down the left side, it's the exact same since the two parents are the same Jenna types. Now, we're looking for how many are hetero cygnus in both traits? Well, to look for these, if we don't want to sit there and scan each little box, we can kind of logic it out. We look at our first column from the first parent. We have Big C and big D is what the offspring have inherited. So for them to be hetero sagas, then from the other parents, they need to inherit little C and little D. So if we go down the column to where that can be combination is, that would be our bottom box. There gives us heterocyclic in both traits. Big C, little C, big D, little D. So let's look at the second column in that column from the one parent, they've inherited a big C and a little D. So from the other parent, they need to inherit a little Sienna Big D. Well, that would be the third box down. So we'll highlight that one had rose a kiss in both traits. The third column from one parent, little C and big T. So from the other parent, they need big C and little D. That will be the second box down and there's our offspring had both traits highlight that. And then finally, the last column from one parent, little C, little D. So from the other parent, they have to inherit big C big D and that's the top box. So we highlight that. So altogether out of the 16 boxes, there are four that are hetero cygnus in both treats. So that would equal four out of 16 offspring hetero side guess for both traits. And as we go over to answer choice, we see that Choice D We recall is 4/ and is therefore our correct answer you in the next video.

An organism having the genotype AaBbCcDdEe is self-fertilized. Assuming the five genes assort independently, determine the following proportions:

Progeny that are expected to have the genotype AabbCcDdE–

Key Concepts

Independent Assortment

Genotype and Phenotype

Punnett Square

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