Although attempts to date the divergence between humans and chimpanzees using molecular sequence data do not perfectly agree, a rough consensus from multiple analyses would place the divergence date at ________
A) 175,000 years ago
B) 6,000 years ago
C) 5 to 7 million years ago
D) 3.14 million years ago
E) 65 million years ago
C
Biology & Microbiology
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What is the name of the syndrome that produces the XXY combination of sex chromosomes?
A. Klinefelter syndrome B. Down syndrome C. Turner syndrome D. Jacob's syndrome
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Does the permeability of the membrane affect the time required to reach equilibrium?
a. Yes b. No
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Triiodothyronine (T3) is secreted by
a. pancreatic islet cells. b. the thyroid gland. c. the pituitary gland. d. the adrenal medulla. e. the adrenal cortex
Biology & Microbiology
If a cell containing 20 chromosomes divides by mitosis, a total of how many daughter cells will be produced?
a. 1 b. 2 c. 3 d. 4 e. 5
Biology & Microbiology