The mutation that causes the lighter skin color
of all people of European descent was the
result of what type of mutation?
a. base-pair substitution
b. insertion
c. deletion
d. whole chromosome duplication
e. multiple gene mutations involving several
mechanisms
A
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Which of the following is not a characteristic of an autosomal dominant disorder pedigree?
A. Two unaffected parents will not have affected children. B. Heterozygotes are affected. C. Affected children will usually have unaffected parents. D. Two affected parents can produce an unaffected child. E. Both males and females are affected with equal frequency.
Many new species of desert lizards have arisen from a nonnative population which was introduced into the American
southwest. This example best describes:a. the effects of climatic change. b. sympatric speciation. c. allopatric speciation. d. adaptive radiation. e. microevolution.
What (and who) was the first reproductively cloned animal?
What will be an ideal response?
The ability to taste the compound sodium benzoate is controlled by the dominant allele 'B', while individuals homozygous for the recessive allele 'b' are unable to taste this compound. In a population of 1000 individuals, 100 are unable to taste sodium benzoate. Assume that this population is in Hardy-Weinberg equilibrium.
a. 0.250 b. 0.316 c. 0.432 d. 0.949