At the end of DNA replication, the sister chromatids are held together by the ___________

(a) kinetochores.
(b) securins.
(c) cohesins.
(d) histones.


(c)

Biology & Microbiology

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Which of the following initially traps solar energy in the process of photosynthesis?

A) water B) chlorophyll C) triose phosphate D) NADP+ E) ATP

Biology & Microbiology

Which group of terms refers to the microsporophyll, the male portion of a flower?

a. ovary, stamens, pistil. b. stigma, style, ovary. c. anther, stamen, filament. d. megasporangium, microsporangium, ovule.

Biology & Microbiology

The normal human karyotype contains ____ total chromosomes, consisting of ____ autosomes and ____ sex

chromosomes. a. 23; 22; 1 b. 44; 22; 1 c. 46; 22; 2 d. 46; 23; 0 e. 22; 20; 2

Biology & Microbiology

Which of the following undergoes meiosis during the development of pollen grains?

A) Megaspore B) Generative nucleus C) Microspore D) Microspore mother cell E) Megaspore mother cell

Biology & Microbiology