What is the relationship between recombination frequency and the actual physical distance on a chromosome?
A. As physical distance increases, the recombination frequency increases in a linear fashion.
B. As physical distance increases, the recombination frequency decreases in a linear fashion.
C. As physical distance increases, the recombination frequency first increases in a linear fashion, but gradually levels off to a frequency of 0.5.
D. As physical distance increases, the recombination frequency first increases, but then decreases.
C. As physical distance increases, the recombination frequency first increases in a linear fashion, but gradually levels off to a frequency of 0.5.
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Why do African populations of humans have higher levels of genetic variation compared to non-African populations?
A. Humans originated in Africa, and subsequent migrations resulted in populations seeded by small groups with relatively small amounts of variation. B. Because African populations show strong patterns of assortative mating. C. Numerous migrations to Africa throughout early human history has increased genetic diversity there. D. High levels of UV radiation in equatorial regions of the world have increased levels of genetic mutations in Africa.
What percentage survived after treatment B?
a. 30 percent b. 50 percent c. 70 percent d. 75 percent
Chemicals used to attract mates are called
A. allelopaths. B. genetic byproducts. C. hormones. D. pheromones. E. allomones.
One of the components of metabolic syndrome is
a. high body weight. b. high waist circumference. c. low blood sugar. d. low blood pressure.