To examine:
The cross between black and bronze plumage.
Introduction:
Plumage refers to the colored pattern or the layer of father that cover a bird, including the arrangement of the feathers. In different species or subspecies of birds the pattern and color of plumage are varied. The colors of plumage include black and bronze. The alleles for the black color is
Explanation of Solution
A cross between the
A cross between
To examine:
The cross between black and black plumage.
Introduction:
The colors of plumage include black and bronze. The alleles for the black color is
Explanation of Solution
A cross between the
The obtained genotypic ratio is 3:1.
The obtained phenotypic ratio is 3:1.
A cross between
To examine:
The cross between black-bronze and black-bronze plumage.
Introduction:
The allele for the bronze color is
Explanation of Solution
A cross between the
A cross between
To examine:
The cross between black and-bronze color plumage.
Introduction:
Plumage is the layer of feathers with different colored patterns that cover a bird, including the arrangement of the feathers. The alleles for the black color is
Explanation of Solution
A cross between the
The obtained genotypic ratio is 1:1:1:1
The obtained phenotypic ratio is 1:2:1 (bronze:black:black-bronze)
A cross between
To examine: The cross between bronze and-black-bronze plumage.
Introduction:
In different species or subspecies of birds the pattern and color of plumage are varied. The colors of plumage include black and bronze. The alleles for the black color is
Explanation of Solution
A cross between the
The obtained genotypic ratio is 1:1
The obtained phenotypic ratio is 1:1 (bronze : black-bronze)
A cross between
To examine:
The cross between bronze and bronze plumage.
Introduction:
The colors of plumage include black and bronze. The alleles for the black color is
Explanation of Solution
A cross between the
The obtained genotypic ratio is 1:2:1
The obtained phenotypic ratio is 3:1 (bronze : black-bronze)
A cross between
To explain:
Whether these differences in plumage arise from incomplete dominance or not.
Introduction:
When one of the paired alleles does not completely express itself for a particular
Explanation of Solution
Incomplete dominance is the phenomenon in which one of the alleles for specific phenotype is not completely expressed. These differences in plumage arise from the incomplete dominance because the allele for the bronze color (
Symbols for alleles:
Genotype of turkeys:
Cross 1:
Cross 2:
Cross 3:
Cross 4:
Cross 5:
Cross 6:
Hence, the result of cross 1 shows that all plumages are of black color. The result of cross 2 shows that black is dominant over bronze color in the ratio of 3:1. The result of cross 3 shows that all plumages are of black-brown color. The result of cross 4 shows that ½ offspring are black, ¼ offspring are bronze, and ¼ offspring are black-bronze. The result of the cross 5 shows that half of the offsprings are bronze and half are black bronze. The result of cross 6 shows that ¾ offspring is bronze and ¼ fourth are black-bronze.
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Chapter 5 Solutions
Genetics: A Conceptual Approach
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