A disorder that has varying levels of severity is an example of ________.
Fill in the blank(s) with the appropriate word(s).
Ans: expressivity
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Refer to the paragraph on dark-eyed junco birds. The UCSD campus male junco population tails were, on average, 36% white, whereas the tails of males from nearby mountain populations averaged 40-45% white
If this observed trait difference were due to a difference in the original colonizing population, it would most likely be due to _____. A) mutations in the UCSD population B) gene flow between populations C) a genetic bottleneck D) a founder effect
__________________________occurs when a trait has been repurposed during evolution.
Fill in the blank(s) with the appropriate word(s).
Photorespiration
A) may be an evolutionary relic from when atmospheric O2 levels were low. B) is of benefit to the plant since it breaks down rubisco. C) is attributable to high CO2 levels. D) produces glucose.
Which of the following is involved in translation?
A) rRNA only B) tRNA only C) mRNA only D) both mRNA and tRNA E) mRNA, rRNA, and tRNA are all involved.