Concept explainers
a.
To determine:
Whether a male inherits an X chromosome from his mother or his father.
Introduction:
Studying human inheritance patterns have given many insights into how genetic disorders arise and progress.
b.
To determine:
The types of gametes that can be produced by a male with respect to X-linked alleles.
Introduction:
Several genetic disorders are associated with alleles on the X chromosome. Almost all of X-linked disorders are inherited in a recessive pattern.
c.
To determine:
The kind of gametes that can be produced by a female which is homozygous for an X-linked allele.
Introduction:
The examples of X-linked recessive disorder are Duchenne muscular dystrophy, hemophilia A, red-green color blindness, and others.
d.
To determine:
The kind of gametes that can be produced by a female which is heterozygous for an X-linked allele.
Introduction:
The human X chromosome carries about 2, 000 genes, which is almost 10 percent of the total genome.
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