Scientists study the genomes of many different living organisms besides humans, including, for example, fruit flies, yeasts, and mice. Of what value is understanding the genes of a mouse in comparison to those of a human? Are the two even remotely
comparable?
What will be an ideal response?
The basic metabolic machinery of all cells is essentially the same. Mice and humans have 90% of the same genetic makeup.
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A cell in prophase I of meiosis has ______________ as many chromosomes as each of the daughter cells following cytokinesis of meiosis II
A. twice B. half C. one-quarter D. four times
The eggs of the A. lumbricoides worm are ingested and hatched in the duodenum, penetrate the intestinal wall, and migrate to the hepatic portal circulation. Its geographic distribution and in-fection rate are associated with:
a. institutional crowding. b. poor sanitation. c. day care centers. d. moist warm soil.
What is the name of the meristematic tissue that gives rise to future vascular tissue?
A. procambium B. cork cambium C. ground meristem D. dermal tissue E. protoderm
Using correct terminology, describe what would happen to a red blood cell placed in a solution of
0.5% sodium chloride. What will be an ideal response?