In eukaryotic cells, which occurs during the prophase of mitosis?

A. Duplication of chromatids
B. Replication of DNA
C. Separation of sister chromatids
D. Breakup of the nuclear envelope
E. Appearance of the nuclear envelope


Answer: D

Biology & Microbiology

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When an error of mitosis or meiosis results in a diploid gamete, the gamete is said to be ____, which can result in

____.

a. reduced; allopolyploidy only b. reduced; autopolyploidy only c. unreduced; allopolyploidy only d. unreduced; autopolyploidy only e. unreduced; both allopolyploidy and autopolyploidy

Biology & Microbiology

In this section of the tissue layers of a cnidarian, which item, A, B, C, or D, is a nematocyst?

1.A 2.B 3.C 4.D

Biology & Microbiology

Three of the four organisms listed below are

stramenopiles. Select the exception. a. diatoms b. dinoflagellates c. oomycotes d. brown algae e. none of these belong to stramenopiles

Biology & Microbiology

The amount of energy needed to maintain basic metabolic functions is the

a. basal metabolic rate. b. body mass index. c. thermic effect of food. d. basic body index. e. metabolic ratio.

Biology & Microbiology