American Public University BIOL 133 - A and Z are independent events
A and Z are independent events. The probability that A occurs is
¼. The probability that Z occurs is ¼. What is the probability that both will
occur?
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A.1/4 |
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B.1/8 |
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C.1/3 |
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D.1/2 |
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E.1/16 |
What statement describes X-linked traits? Select all that apply.
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A. Women can be carriers because they can be heterozygous for the trait |
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B. X-linked traits are more common in men |
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C. Males are never carriers since they only receive one X chromosome |
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D. Males inherit X-linked traits from their fathers |
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E. Women only have to have one
affected gene to show the trait |
If genes are completely linked, all the offspring will be _________.
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A.recombinants |
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B.hybrids |
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C.dominant |
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D.parental |
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E.recessive |
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Marfan syndrome is a dominant trait. A cross between a homozygous dominant and a heterozygote would produce what phenotypic ratio?
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A.1:2:1 |
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B.3:1 |
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C.2:2 |
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D.1:3 |
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E.4:0 |
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Sickle cell anemia is a recessive trait. A cross between two heterozygotes would produce what phenotypic ratio?
Low pitched male voices (RR) and a high pitched male voice (rr). Heterozygotes have a baritone voice. This is an example of _________.
The allele for widows peak (H) is dominant for the allele for no widows peak (h). At a different gene locus, the allele for hitchhikers thumb (D) is dominant to the allele for non-hitchhikers thumb (d). A man is heterozygote for the traits and marries a woman who has no widows peak and is heterozygote for hitchhikers thumb. What is the man’s genotype?
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Solution: American Public University BIOL 133 - A and Z are independent events