In the male,
A) meiosis results in just one sperm cell.
B) the cells from which sperm arise are produced continuously throughout life.
C) sperm cells do not reach maturity until adolescence.
D) about 1 to 2 million sperm are produced when meiosis is complete.
B
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Your genetics professor has asked you to simplify the process of natural selection into a sequence of steps. Which of the following will your professor agree is the correct sequence?
a. competition for resources, reproductive success, frequency of genotype increases, selection of fittest genotype, environmental pressure b. reproductive success, competition for resources, frequency of genotype increases, environmental pressure, selection of fittest genotype c. selection of fittest genotype, competition for resources, environmental pressure, reproductive success, frequency of that genotype increases d. environmental pressure, competition for resources, selection of fittest genotype, reproductive success, frequency of genotype increases
An individual's __________ refers to his or her actual characteristics
a) phenotype b) genotype c) sex chromosomes d) polygenic inheritance