In eukaryotic DNA methylation, methyl groups are usually added to which molecule?

A. Guanine
B. Thymine
C. Adenine
D. Cytosine
E. Deoxyribose


Answer: D

Biology & Microbiology

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A. is required for the pairing of homologous chromosomes. B. contributes to the genetic diversity of a species. C. ensures that the resulting haploid cells will have the same combination of homologous chromosomes as the original diploid cell. D. aids the alignment of sister chromatids in a single row along the metaphase plate. E. occurs during meiosis II.

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In the image above, the substance indicated as

"B" is a(n) a. inhibitor. b. activator. c. substrate. d. coenzyme. e. cofactor

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Monocots, but NOT eudicots, have

a. nodes. b. cotyledons. c. coleoptiles. d. hypocotyl hooks. e. flowers.

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The lowermost and outermost whorl on a floral shoot consists of petals

____________________ Indicate whether the statement is true or false.

Biology & Microbiology