Expression of the Hoxc6 gene causes ____
a. ribs to develop on a vertebra
b. the development of eyes
c. limb bud development
d. gill arches to close
e. the development of hair
ANSWER: a
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Although Dolly was only three years old, her chromosomes had the length of a 9-10 year old sheep. Which of the following best describes why this occurred?
A. The cell lines that created Dolly were aged prematurely in the lab B. Nonhomologous recombination C. A mutation enhanced the rate of aging D. Dolly was not a clone E. The telomeres of the somatic cells that Dolly originated from were shortening
Protein-encoding genes in eukaryotes are transcribed by ____
a. RNA polymerase I b. RNA polymerase II c. RNA polymerase III d. either RNA polymerase I or III e. either RNA polymerase II or III
Which of the following would a scientist use during the entire process of conducting an experiment?
a. descriptive reasoning and inductive reasoning b. descriptive reasoning and deductive reasoning c. deductive reasoning and inductive reasoning d. only deductive reasoning
In a population, the allele frequency for red flower color remained at 0.7 and the allele frequency for white flower remained at 0.3 for six generations. This ____________ an example of a Hardy-Weinberg equilibrium in that _____________.
A. is not, evolution occurred B. is, evolution did not occur C. is, evolution occurred D. is not, evolution did not occur