Eumetazoa can be subdivided into two principal branches based on ________.
Fill in the blank(s) with the appropriate word(s).
symmetry
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Over several generations in a population, inbreeding tends to
A. decrease the relative proportions of homozygotes. B. decrease the likelihood of heterozygotes. C. stabilize the balance of genotypes predicted by the Hardy-Weinberg equilibrium. D. All of the choices are correct.
The number of new cases of a disease occurring during a period is referred to as the _____ of the disease
Fill in the blank(s) with the appropriate word(s).
Gametes may carry different combinations of alleles because of Select one:
a. random fertilization and alignment of chromosomes. b. random fertilization and crossing over. c. crossing over and random alignment of chromosomes. d. random fertilization. e. random alignment of chromosomes.
The intermediate host for a blood fluke is a:
a. human. b. cow. c. dog. d. cat.
e. snail.