Question

A species of bird on the mainland can have yellow (bb), blue (bb), or green (bb) plumage. a few yellow birds land on a ship and are carried past an island, which they land on and settle. the resulting population of birds would have an allele frequency of: a. b: 1 b: 0 b. b: 0.3 b: 0.7 c. b: 0 b: 1 d. b: 0.5 b: 0.5

Answer 1

Birds living in this population would have an allele frequency of "b."

If the blue species of birds have homozygous dominant alleles of BB, the green species of birds have heterozygous alleles of Bb, and the yellow species of birds have homozygous recessive alleles of bb, then b is the "recessive allele" and b is the dominant allele for blue.

NOTE:

The term "recessive allele" refers to the character/allele that is eclipsed by the dominant character, whereas a "dominant allele" is a character/allele whose phenotype is displayed to the complete exclusion of the other character/allele.

When a pair of alleles in a gene are homozygous, they are the same; when they are heterozygous, they are different.

Given that the yellow birds are homozygous for "b," the population of birds that results when they (only) arrive and settle on the Island will also be homozygous for "b." As a result, every bird on the island will have the gene "bb".

learn more about  allele frequency here

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