An example of a suppressor mutation would be
A. An intragenic mutation that restores the inactive protein's structure
B. An intergenic mutation that increases the activity of a protein performing a different function as the mutated protein
C. An intergenic mutation that activates a transcription factor that increases the espression of a normal protein
D. A mutation that suppresses cell growth
A
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The enormous genetic diversity of HIV has made it especially difficult to create a vaccine against the virus. We can attribute this genetic diversity to
A. mutation hotspots in the hemagglutinin (H) molecule. B. mutation hotspots in the CD4+ molecule. C. the high error rate of reverse transcriptase. D. the high sensitivity of the virus to UV radiation. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about HIV infection? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
In a developing embryo, different cells begin to transcribe different master genes, depending on where they fall within a gradient of ________
a. protein products of embryonic mRNAs b. homeodomains c. temperature d. protein products of maternal mRNAs
An early marine biology expedition to study Antarctic whales was led by:
a. Sir Alistair Hardy. b. Alexander Agassiz. c. Fridtjof Nanson. d. Charles Wyville Thomson. e. Louis Agassiz.
Bully whippets are abnormally heavily muscled because _____
a. they have a over-abundance of testosterone b. they have an over-abundance of growth hormone c. they are heterozygous for the deletion in the myostatin gene d. they are homozygous for the wild-type myostatin gene e. they are homozygous for the deletion in the myostatin gene