If there are more women in the postreproductive years than in the reproductive years, and more women in the reproductive years than in the prereproductive years, what does the age structure diagram look like?
A. a pyramid
B. a rectangle
C. a cube
D. an inverted pyramid
E. an oval
Answer: D
Biology & Microbiology
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If a combination of two or more genes is required to produce a specific trait, it is called a(n) _______
A. overdominance B. simple mendelian trait C. sex-influenced trait D. sex-linked trait E. gene interaction
Biology & Microbiology
A mutation that reduces the efficacy of arginase 1 will result in a buildup of what molecule?
a. urea b. arginosuccinate c. l-arginine d. ornithine
Biology & Microbiology
How much of bone is recycled each week?
a. 90-100% b. 40-45% c. less than 1% d. 5-7%
Biology & Microbiology
Which microscope shows cells against a bright background and the intracellular structures of unstained cells based on their varying densities?
A. phase-contrast B. fluorescence C. dark-field D. bright-field E. electron
Biology & Microbiology