Consider the case of X-linked inheritance of a recessive mutant allele. Among progeny from a cross of an unaffected male and a heterozygous female carrier,
A: all male offspring of would show the trait.
B: all female offspring who receive the recessive mutant X would show the trait.
C: all male offspring who receive the recessive mutant X chromosome would show the trait.
D: all female offspring would be carriers.
E: roughly half of the female offspring would show the trait.
Answer: C: all male offspring who receive the recessive mutant X chromosome would show the trait.
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Similarity in evolutionarily unrelated groups due to adaptation to similar environments is called
A. concentric evolution. B. convergent evolution. C. biogeographic evolution. D. Hardy-Weinberg equilibrium. E. both biogeographic and convergent evolution.
A group of interacting serum proteins that provide a nonspecific defense mechanism is
A. complement. B. interferon. C. glycoprotein. D. lysozyme.
Polyploidy is common in species.
A. animal B. fungal C. plant D. bacterial E. All of the answer choices are correct.
In the accompanying figure, a feeding individual in the mature colony is identified by the number
a. 1
b. 2 c. 3 d. 4 e. 5