In the fruit fly Drosophila, a rudimentary wing called '...

Question

In the fruit fly Drosophila, a rudimentary wing called 'vestigial' and dark body color called 'ebony' are inherited as independently assorting genes and are recessive to their dominant counterparts full wing and gray body color. Dihybrid dominant-phenotype males and females are crossed, and 3200 progeny are produced. How many progeny flies are expected to be found in each phenotypic class?

Accepted Answer

Hello, everyone and welcome to today's video. So what is the probability of having a heterozygous normal bristle shape offspring, which is going to have the following genotype from a cross between a heterozygous normal bristle shape, Drosophila, which is going to have the exact same genotype and a homozygous curly bristle shape, Drosophila. And so because these heterozygous or these dominant phenotypes are going to have normal bristle shape and these homozygote has curly bristle shape, it means that it's homozygosis. So it's going to be represented by the following. So let's make this cross between the heterozygous and the homozygous recessive organisms and determine how many heterozygous organisms we're able to get. In order to do that, we need to set up a punnet square. So let's do just that. Now let's make the cross as we can see, there is going to be two out of four hetero ziga normal bristle shape offspring, which is going to be a 50% chance of these occurring or answer choice. C I really hope this video helped you and I hope to see you on the next one

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