If the mutation rate of individual genes is taken to be about one in 100,000 genes per cell cycle across many organisms, we might expect evolution to proceed at a consistent rate for various forms of life. Which factor could make the accumulation of gene mutations faster or slower among different organisms?
A. Organisms with more genes will likely have more mutations per generation.
B. Organisms vary in the percent of loci that have multiple alleles.
C. Some organisms may be more effective at repairing mutations before they are passed on to the next generation.
D. More selection of mutations can occur in a shorter period of time for bacteria that replicate each twenty minutes than for humans with a (roughly) 20-year generation span.
E. All of the choices are correct.
Answer: E
You might also like to view...
Which of the following statements is false?
a. Because males do not have follicles, the folliclestimulating hormone has no function in males. b. LH binds to Leydig cells, stimulating them to secrete testosterone. c. The testes descend into the scrotal sac before birth. d. For sperm to develop properly they must be in an environment that is below body temperature. e. The scrotal sac is equipped with muscles that may raise or lower the testes.
Within the chordate classes, the unique characteristic of the class Aves is:
a. flight. b. production of uric acid. c. feathers. d. endothermy. e. a forked tongue
Please choose the answer that best fills in the blanks of this sentence in the correct order. A ________ infectious disease, such as a urinary tract infection, is not transmitted from person to person, whereas an infectious disease which is transmitted from one person to another, such as influenza, is referred to as a ________ infectious disease.
A) Communicable; noncommunicable B) Noncommunicable; communicable C) Communicable; contagious
Following its initial activation, how does a G protein become inactivated?
A. The G-protein, a subunit, is digested and recycled. B. It spontaneously loses activity within a few seconds. C. The G-protein, a subunit containing a GTP, eventually reassociates with the G-protein bg dimer. D. The G-protein, a subunit GTP, is hydrolyzed to GDP allowing reassociation of the G-protein a subunit and ?? dimer. E. The receptor becomes internalized.