The sharp reduction of the gene pool and the numbers of a population through a severe epidemic is an example of
a. artificial selection.
b. genetic isolation.
c. the bottleneck effect.
d. the founder effect.
e. natural selection.
c
You might also like to view...
Oxygen did not accumulate in the early atmosphere until it reacted with reduced materials, especially ________, in the oceans
A) hydrogen B) elemental sulfur C) ferrous iron D) nitrate
Genetic variation associated with meiosis is manifested as
a. new combinations of alleles due to crossing over. b. random movement of homologous pairs of chromosomes moving to spindle poles. c. random chance playing a role when a sperm fertilizes an egg. d. diploid cells expressing various traits. e. a, b, and c.
Which disease is caused by bacteria that can paralyze respiratory muscles?
A) E. coli infection B) botulism C) staph infection D) tuberculosis
What are the main features of melanocytes?
A. Melanocytes are found in the epidermis and they produce melanin when exposed to UV light. The melanin is then distributed to dermal cells. B. Melanocytes are found in the epidermis and they produce melanin when exposed to UV light. The melanin is then distributed to epidermal cells. C. Melanocytes are found in the hypodermis and they produce melanin when exposed to UV light. The melanin is then distributed to epidermal cells. D. Melanocytes are found in the dermis and they produce melanin when exposed to UV light. The melanin is then distributed to epidermal cells.