Mutations that cause sickness and death after reproduction:
a. are unlikely to occur.
b. can be passed on to future generations.
c. are passed on to future generations only in species that have long life spans.
Ans: b. can be passed on to future generations.
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Which of the following is most likely to be the source of most of the oxygen in the atmosphere?
A) weathering of rocks B) UV radiation C) photosynthesis D) macroevolution
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
The prokaryotic flagellum has three parts: the ________, the hook, and the basal body.
Fill in the blank(s) with the appropriate word(s).
P, D, and Q are three genes found on a single chromosome in greyhounds. The recombination frequencies between the three genes are shown below. In which order are these genes found on the greyhound chromosome?P-D = 50% P-Q = 20% D-Q = 30%
A. P-Q-D B. Q-D-P C. D-P-Q D. P-D-Q E. It is impossible to determine.