Biology, 18.02.2020 03:16 daniel7363
Although the vast majority of women who inherit a single copy of an X-linked recessive disease allele are not affected by the disorder, a small percentage of women do display the disease phenotype. Which of the following could explain this rare phenomenon?
A. X-inactivation that favors inactivation of the normal X chromosome
B. incomplete penetrance of the X-linked recessive allele
C. Turner syndrome (a sex-chromosome aneuploidy in which women have only one X chromosome)
D. multiple alleles of the X-linked recessive trait
Answers: 2
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Biology, 21.06.2019 18:00, staxmillz
What evidence did mendel find that supported his law of independent assortment? a. dominant traits are expressed when there is a dominant allele. b. traits do not affect the inheritance of other traits. c. some traits have three or four different alleles. d. plants and animals can both reproduce sexually.
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Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins
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Although the vast majority of women who inherit a single copy of an X-linked recessive disease allel...
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