The chromosomal structure that anchors the spindle fiber to the chromosome is known as the ____________________
Fill in the blank(s) with correct word
centromere
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The sharp peak of estradiol secretion during the ovarian cycle
A. inhibits the secretion of LH and FSH. B. stimulates the secretion of LH and ovulation. C. stimulates growth of the uterine lining. D. stimulates completion of meiosis I. E. inhibits progesterone production.
Species richness on an island is determined by ____
a. distance from the mainland only b. island size only c. the type of species on the island only d. distance from the mainland and island size e. distance from the mainland and type of species on the island
__________ can lead to the loss of genetic diversity. Fill in the blank(s) with the appropriate word(s)
Contact of an egg with signal molecules on sperm causes the egg to undergo a brief
A) mitosis. B) membrane depolarization. C) apoptosis. D) vitellogenesis. E) the acrosomal reaction.