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In silkmoths, red eyes (re) and white-banded wings (wb) are encoded by two mutant alleles that are recessive to those that produce wild-type traits (re and wb ); these 2 genes are on the same chromosome. A moth homozygous for red eyes and white-banded wings is crossed with a moth homozygous for the wild-type traits. The F1 have wild-type eyes and wings. The F1 are crossed with moths that have red eyes and white banded wings in a test cross. The progeny of this test cross are: 418 wild-type eyes, wild-type wings 19 red eyes, wild-type wings 16 wild-type eyes, white-banded wings 426 red eyes, white-banded wings

Which category/categories are your nonrecombinant and which is/are your recombinant progeny?

2 Answers

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Final answer:

The nonrecombinant progeny are the ones displaying the parental phenotypes, which are the 426 red eyes with white-banded wings and the 418 wild-type eyes with wild-type wings. The recombinant progeny are those with new combinations of traits, which are the 19 red eyes with wild-type wings and the 16 wild-type eyes with white-banded wings.

Step-by-step explanation:

In the scenario described, where silkmoths with red eyes (re) and white-banded wings (wb) are encoded by two mutant alleles that are recessive to the wild-type traits, the nonrecombinant progeny resulting from a test cross with the F1 generation are the ones that display the parental phenotypes, which in this case, are the most common phenotypes observed in the progeny. The nonrecombinant progeny are the 426 red eyes, white-banded wings and the 418 wild-type eyes, wild-type wings. On the other hand, the recombinant progeny are the ones that show new combinations of traits that were not present in the parental generation, which in this scenario are the 19 red eyes, wild-type wings and the 16 wild-type eyes, white-banded wings.

User Mmix
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Answer:

that are recessive to those that produce wild-type traits (re and wb ); these 2 gene

Step-by-step explanation:

that are recessive to those that produce wild-type traits (re and wb ); these 2 genethat are recessive to those that produce wild-type traits (re and wb ); these 2 gene

User Jhamm
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