The only genes necessary for the retroviral lifecycle are gag and pol
Indicate whether the statement is true or false
FALSE
Explanation: In addition to these, the env gene is also necessary.
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If you allowed 10 identical parallel Salmonella cultures to evolve for 10,000 generations under new growth conditions with very little nitrogen, the parallel cultures would
A) evolve identical adaptations to use the nitrogen source provided in the media. B) not change or adapt very much over this small number of generations. C) each accumulate different random mutations resulting in different adaptations to use the nitrogen in the media. D) direct mutations to occur in nitrogen utilization and uptake genes in order to adapt rapidly to the culture conditions.
The natural philosophy of Aristotle and his colleagues was
(a) mechanistic. (b) vitalistic. (c) a belief in absolute truth. (d) a and c.
If a pedigree of several generations shows only females affected by a particular trait, what can be ruled
out? A. Autosomal recessive inheritance D. X-linked recessive inheritance B. X-linked dominant inheritance E. None of these can be ruled out C. Y-linked inheritance
Suppose you are studying photosynthesis in a research lab. You grow your plants in a chamber with a source of water that has a radioactively labeled oxygen atom. What photosynthetic product will be radioactive?
A) NADPH B) CO2 gas C) ATP D) Glucose E) O2 gas