Cells that bind FSH and testosterone are indicated by
a. A.
b. B.
c. C.
d. E.
e. none of these.
Answer: e
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What is the difference between pollination and fertilization in flowering plants?
A) Fertilization precedes pollination. B) Pollen is formed within megasporangia so that male and female gametes are near each other. C) Pollination is the transfer of pollen from an anther to a stigma. Fertilization is the fusion of haploid nuclei. D) If fertilization occurs, pollination is unnecessary.
HIS4 trp1; HIS4 TRP1; his4 TRP1; his4 trp1
A haploid yeast strain has mating type a and genotype his4 TRP1. A different haploid yeast strain has mating type ? and genotype HIS4 trp1. The two strains mate and produce diploid offspring with genotype his4 TRP1 / HIS4 trp1. The diploid cells undergo meiosis to produce a variety of tetrad types. In the following questions, the genotypes of the spores in a tetrad are shown. For each tetrad, tell what type it is: parental (PD), non-parental (NPD), or tetratype (T). A) PD B) NPD C) T D) cannot be determined
In retroviruses, the pol gene product is a(n)
A) DNA polymerase. B) reverse transcriptase. C) integrase. D) RNA polymerase. E) recombinase.
__________ provide much of our lumber for building and wood pulp for paper productions.
A. Charophytes B. Gymnosperms C. Bryophytes D. Seedless vascular plants