Describe in your own words the difference between a sporophyte and a gametophyte.
What will be an ideal response?
A sporophyte is diploid while a gametophyte is haploid.
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Which of the following represents the high energy bond in ATP?
a. the bond between the ribose and adenine b. the bond between the alpha phosphate group and the ribose c. the bond between the phosphate groups d. the bond between the gamma phosphate and the water molecule
What is a terminator?
A. A promoter is a region of DNA that marks the beginning of a gene. B. A promoter is a region of mRNA where RNA polymerase binds. C. A promoter is a region of DNA that marks the end of a gene. D. A promoter is a region of mRNA that is sliced out.
Which of the following is part of the maturation of a eukaryotic mRNA?
1.removal of introns 2.the linking of exons 3.addition of the 5‘ cap 4.addition of the poly A tail 5.All of the options are correct.
Why does reinforcement involve a strengthening of prezygotic, rather than postzygotic, isolation?
A. The rewards of postzygotic isolation are always much smaller than those of prezygotic isolation. B. Reinforcement occurs only rarely. C. Postzygotic isolation has only a minimal evolutionary impact. D. Alleles that prevent interbreeding are more likely to be inherited by viable, nonhybrid offspring than alleles that permit random mating. E. Assortative mating is uncommon.