The evolution of similar body parts in different lineages is called
a. adaptation.
b. morphological divergence.
c. vestigial structures.
d. morphological convergence.
e. heterozygous structures.
Answer: d. morphological convergence.
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If two solutions have unequal concentrations of a solute, the solution with the lower concentration is called
A. isotonic. B. hypertonic. C. hypotonic. D. osmosis.
In humans, fertility curves
a. determine the number of individuals entering a population. b. represent reproduction rates versus age of population members. c. do not change throughout the reproductive years. d. are important for females and males. e. do not affect population size.
Variation in expressivity and penetrance of genes is due to the effects of other genes and the
environment. Indicate whether the statement is true or false.
Which statement best describes the difference between therapeutic and reproductive cloning?
A) Therapeutic cloning involves producing medications, whereas reproductive cloning is used for in vitro fertilization procedures. B) Therapeutic cloning is used to produce stem cells that can be coerced into differentiating into a specific cell type, whereas reproductive cloning is used to produce organisms identical to what they were cloned from. C) Therapeutic cloning produces cells that are not genetically identical to their source, whereas reproductive cloning produces cells that are genetically identical to their source. D) There really aren't any differences between therapeutic and reproductive cloning.