Which term refers to the flow of genetic information from DNA to mRNA to proteins?
a. the central dogma
b. gene expression
c. telomere replication
d. the transcription bubble
a. the central dogma
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If a strain of bacteria had a mutation that blocked expression of the lac repressor, what would you expect as a result?
A. The mutant strain would act the same, because it would still require lac activator protein to turn on. B. The mutant strain would waste energy producing enzymes in the absence of lactose. C. The mutant strain would grow at the same rate as wild-type if lactose was not present. D. The mutant strain would outcompete wild-type strains, since it could always utilize lactose.
In Drosophila, the sex of a fly with the karyotype XO:2A is ________
Fill in the blank(s) with correct word
You will NOT find a cell wall in which of these kinds of organisms?
A. plants B. animals C. fungi D. bacteria
Birds have scaly feet and lay amniotic eggs. This supports the idea that:
a. reptiles evolved from amphibians. b. birds are the only creatures to ever have feathers. c. birds are endothermic. d. birds evolved from reptiles. e. None of the above.