At the end of DNA replication, the sister chromatids are held together by the ___________
(a) kinetochores.
(b) securins.
(c) cohesins.
(d) histones.
(c)
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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
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.
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
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