In a mystical bird species, birds with the dominant allele C are white, whereas birds homozygous for the recessive allele c are colored. This species also have a second locus that acts as a modifier gene if the bird is colored. If birds are colored and are G- at the second locus, they will be yellow. If they are colored and gg at the second locus, they will be green. You cross a double heterozygous bird and a double homozygous recessive (CcGg \times ccgg). What percentage of the offspring will be white, and what percentage will be yellow?

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In a mystical bird species, birds with the
dominant allele C are white, whereas birds
homozygous for the recessive allele c are
colored. This species also have a second locus
that acts as a modifier gene if the bird is colored.
If birds are colored and are G- at the second
locus, they will be yellow. If they are colored and
gg at the second locus, they will be green. You
cross a double heterozygous bird and a double
homozygous recessive (CcGg \times ccgg).
What percentage of the offspring will be white,
and what percentage will be yellow?
Transcribed Image Text:In a mystical bird species, birds with the dominant allele C are white, whereas birds homozygous for the recessive allele c are colored. This species also have a second locus that acts as a modifier gene if the bird is colored. If birds are colored and are G- at the second locus, they will be yellow. If they are colored and gg at the second locus, they will be green. You cross a double heterozygous bird and a double homozygous recessive (CcGg \times ccgg). What percentage of the offspring will be white, and what percentage will be yellow?
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