Compare the events of meiosis I and II in the production of gametes
What will be an ideal response?
ANSWER: Meiosis I is important in providing opportunities for genetic variability to be introduced. This
is accomplished via crossing-over in prophase I and via independent assortment of
homologous chromosomes in anaphase I. In addition, meiosis I reduces the diploid
chromosome number in the parent cell to the haploid state in daughter cells. The primary
purpose of meiosis II is to segretate sister chromatids to produce four total daugther cells.
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The peripheral nervous system is divided into what two branches?
a. somatic and sympathetic nervous systems b. parasympathetic and autonomic nervous systems c. somatic and autonomic nervous systems d. parasympathetic and sympathetic nervous systems
Estrogen is involved in calcium metabolism as well as female reproductive functions. This is why post-menopause, women experience which of the following conditions as a result of decreased estrogen?
a. gall stones b. dementia c. osteoporosis d. arthritis
In a woody stem, secondary xylem and secondary phloem can be produced by the
A. vascular bundle. B. casparian strip. C. vascular cambium. D. sieve tube. E. companion cells.
A muscle contraction that shortens the muscle to move a load is
a. isometric. b. isotonic. c. eccentric. d. heliocentric. e. dynamic.