Concept explainers
a.
To determine: The genotypes that are probable for the mother of the color-blind man.
Introduction: The color blindness is carried on by a faulty color vision gene on the X chromosome as a recessive disorder. Also, this marks about one in ten men and also has two forms.
To determine: The probabilities that the first child will be a color-blind boy.
Introduction: Red or green color blindness is carried from mother to son at the 23rd chromosome, which is identified as the sex chromosome as it further illustrates as sex chromosome.
c.
To determine: The proportion that can be estimated to be color-blind of any girl.
Introduction: A color-blind boy cannot inherit a color-blind ‘gene’ from the father, yet his father is color blind as his father can pass an X chromosome to the daughters.
d.
To determine: The proportion that can be expected to have a normal color vision of all the children.
Introduction: The color blind 'gene' is conducted on one of the X chromosomes. As men possess only one X chromosome, and if his X chromosome transfers the color blind 'gene' that is 'X,' he will be color blind XY.
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Chapter 2 Solutions
ACHIEVE:INTRO TO GENETIC ANALYSIS 1TERM
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