Prostaglandins are involved in the regulation of all of the following processes except:
a. increasing the permeability of capillaries.
b. inducing labor in pregnant women.
c. regulating blood pressure.
d. promoting the healing of ulcers.
e. causing inflammation.
A
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Obligately symbiotic relationships generally do not foster horizontal gene transfer at a higher rate than non-symbiotic relationships
Indicate whether the statement is true or false.
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.
The alternate forms of a gene are called
A) chromosomes. B) loci. C) alleles. D) genomes.
The hormone ADH
A) causes the kidneys to produce dilute urine. B) is secreted by the kidneys. C) causes the cells of the collecting duct to be more permeable to water. D) causes the kidneys to produce a high volume of urine. E) is usually secreted when the body is completely hydrated.