To determine the evolutionary history of a gene, geneticists assume that the most prevalent alleles in a population

A) are dominant.

B) have mutated the most.

C) are the oldest.

D) are the most recently acquired.


C) are the oldest.

Biology & Microbiology

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Which of the following is moved from one side of a lysosomal membrane to the other via a transport channel? Select all correct choices

A. protons B. broken-down macromolecules C. enzymes capable of breaking down macromolecules being delivered from the Golgi apparatus D. protons and broken-down molecules

Biology & Microbiology

Meiosis is indicated by

a. A. b. B. c. C. d. D. e. E.

Biology & Microbiology

An isolated population of wild turkeys has adult males that weigh an average of 18 pounds and females that weigh an average of 10 pounds

Another isolated population living 100 miles north has a population where adult males weigh 13 pounds and females 8 pounds on average. Both populations have a very low phenotypic variance. How could you determine genetic contributions to the weight differences between the populations?

Biology & Microbiology

If A is dominant to a and B is dominant to b, what is the expected phenotypic ratio of the cross AaBb × AaBb?

A) 16:0:0:0 B) 8:4:2:2 C) 1:1:1:1 D) 9:3:3:1

Biology & Microbiology