Nine percent of a population is homozygous recessive (aa) at a certain locus. Assuming that the population is in Hardy-Weinburg equilibrium, which of the following is closest to the frequency of the recessive allele (a)?
a. 0.09
b. 0.27
c. 0.30
d. 0.90
e. 0.97
Ans: c. 0.30
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isolation.
a. behavioral b. ecological c. gametic d. mechanical e. temporal
Many retroviral-like transposons found in the human genome may have been transferred from viruses to mammals via ________ gene transfer.
Fill in the blank(s) with the appropriate word(s).
For which of the following is the number the same in spermatogenesis and oogenesis?
A) timing of meiotic divisions B) functional gametes produced by meiosis C) meiotic divisions required to produce each gamete D) different cell types produced by meiosis
Why have scientists inserted the human insulin gene into the genome of E. coli bacteria?
A) A person who is unable to produce insulin can be cured if infected by a bacterium carrying the human insulin gene. B) Bacteria express the human insulin gene and produce large quantities of the insulin protein, which is sold pharmaceutically. C) Insertion of the human insulin gene into E. coli causes the cells to rupture, thereby controlling and reducing bacterial infections. D) The recombinant bacteria can be used in gene therapy of individuals who have type 1 diabetes. E) The engineered bacteria are used by the food industry as a supplement that improves the absorption of glucose