If populations within the same area split into species, the process is known as
A. allopatric speciation.
B. reproductive speciation.
C. racial speciation.
D. ecotypical speciation.
E. sympatric speciation.
Answer: E
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Which of the following would be considered density-dependent factors that could affect population growth?
A. frost B. droughts C. resources D. fire E. severe weather
Quantitative genetics is
A) the quantitative study of the activity of a gene. B) the study of the genetic diversity within a large group of individuals of the same species. C) the study of the genetic diversity within members of a number of related species. D) the study of traits that are determined by a number of genes simultaneously. E) the study of the number of characteristics found in an organism.
If a microbiologist wanted to check for motility of bacteria, he would choose a medium that was
A) liquid. B) semi-solid. C) solid. D) coagulated
The interrelationships between the endocrine and the nervous systems are especially apparent in a _____
A) steroid-producing cell in the adrenal cortex B) neurosecretory cell in the hypothalamus C) brain cell in the cerebral cortex D) cell in the pancreas that produces digestive enzymes