Seed germination is stimulated by
A) gibberellin. B) abscisic acid. C) florigen. D) ethylene. E) cytokinin.
A
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What is the key concept addressed by the question?
What will be an ideal response?
What is a disadvantage of sexual reproduction?
a. Sexual reproduction generates less genetic diversity than asexual reproduction. b. Sexual reproduction decreases the chance that offspring may be able to live and reproduce in diverse environments. c. Sexual reproduction decreases the chance that, in a changing environment, at least some offspring will grow and reproduce successfully. d. Sexual reproduction produces fewer offspring per parent than asexual reproduction. e. On average, sexual reproduction generates unequal numbers of males and females.
The stage of mitosis when sister chromatids separate from each other and migrate to opposite poles of a cell is called
A) interphase. B) prophase. C) metaphase. D) anaphase. E) telophase.
A mutation within the promoter region of a gene prevents RNA polymerase from recognizing and binding. What effect will this have on the expression of this gene?
A) The mutation will act as a positive control and increase expression of the gene. B) The mutation will prevent expression of the gene. C) The mutation will cause the protein produced by the gene to fold more tightly into its tertiary structure. D) The mutation will cause RNA polymerase to attach to the termination site, and gene expression will decrease. E) The mutation will cause the protein produced by the gene to denature