Which of the following is true about the second meiotic division?
A) Sister chromatids are pulling apart.
B) Homologous chromosomes are pulling apart.
C) The products are four identical gametes.
D) Nondisjunction would lead to extra bivalents forming.
E) Synapsis occurring in the second meiotic division.
Answer: A
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Tooth morphology is not related to diet
a. True b. False
During fertilization in humans, sperm reach the egg by traveling through the vagina, uterus, and fallopian tubes. In which body cavity does the sperm locate the egg ?
A. pleural cavity B. abdominal cavity C. pelvic cavity D. dorsal body cavity (cerebral-spinal) E. pericardial cavity
Unlike passive transport, active transport requires
A.) concentration gradients. B.) diffusion. C.) energy from the cell. D.) vesicles.
__________ species of many plants (and a few animals) originated by chromosome nondisjunction.
Fill in the blank(s) with the appropriate word(s).