35. Which of the following is a possible effect that a transposable element may

Question

35. Which of the following is a possible effect that a transposable element may have on a gene? a. Result in a non-functional product if inserted in the coding region. b. Diminish the expression of a gene if inserted in the promoter of such gene. c. Relocate the gene by generating chromosomal rearrangements. Answers a and b are correct. Answers a, b, and c are correct. d. e. 36. Karyotypes generally remain constant within a species because: a. chromosome rearrangements occur frequently b. changes in chromosome number occur infrequently genetic instabilities produced by genomic changes usually are at a selective disadvantage c. d. genetic imbalances are often at a selective advantage 37. During the pairing of homologs in prophase of meiosis I, the region of a chromosome bearing extra copies of a particular chromosomal region that has nothing with which to recombine forms a so-called: a. inversion loop b. deletion heterozygote C. duplication loop d. deletion loop 38. During the pairing of homologs in prophase of meiosis I, the region of a normal nondeleted chromosome that has nothing with which to recombine forms a so- called

Explanation / Answer

35. e. Answers a, b, and c are correct.

36. c. genetic instabilities produced by genomic changes usually are at a selective disadvantage.

37. d. duplication loop.

38. deletion loop.

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