A gene pool is
A. the genes that are unique to a species.
B. all the genes in a population.
C. all the similar genes in a gene family.
D. a swimming hole for geneticists.
E. a group of species that look alike but are not located in the same area at the same time.
B. all the genes in a population.
You might also like to view...
The activation energy for a reaction
a. is less when enzymes are present. b. allows greater interaction of substrate with the active site. c. is needed to begin a reaction. d. puts the substrate at its transition state. e. is all of these.
Which of the following is NOT a response to low
temperature that increases the chance for survival? a. hypothermia b. shivering c. production of brown fat d. pilomotor response e. increased metabolism
If genetic drift is not accompanied by natural selection, mutation, or migration, then the frequencies of alleles will "wander" between 0 and 1. Using the accompanying figure, which of the following is an accurate statement?
A) Random sampling error generates fluctuations in allelic frequencies over generations, so all populations—both simulated and real—have been found to follow the same evolutionary trajectory. B) The effects of genetic drift are more immediate, and more pronounced, on small population sizes. C) Genetic drift will have no long-term effect on allelic frequencies if the population numbers more than 40 individuals. D) None of these is an accurate statement.
Who first confirmed that the replication of DNA was semiconservative?
a. Chargaff and Hershey b. Watson and Crick c. Avery and Griffith d. Meselson and Stahl e. Watson, Crick, and Wilkins