Assume that an organism has a diploid chromosome number of 14. There would be ________ chromosomes in a tetraploid
A) 56 B) 104 C) 14 D) 28 E) 42
Answer: D
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A population that is decreasing in size will have an age-structure histogram shaped like a(n):
A. pyramid, with a wide base at the bottom representing a large number of young individuals. B. rectangle, with an (roughly) equal number of individuals in each age group. C. inverted pyramid, with a narrow base representing a small number of young individuals. D. diamond, with a wide center depicting a large number of individuals that have reached reproductive maturity.
When did the ocean begin to form?
a. 200 million years ago b. 4.2 billion years ago c. 5 billion years ago d. 3.4 billion years ago
The adrenal cortex produces
a. aldosterone. b. epinephrine. c. norepinephrine. d. testosterone. e. glucagon
The (epithelial/goblet/mucous) cells in the tracheal mucous membrane produce mucus.
Fill in the blank(s) with the appropriate word(s).