The ability to tolerate lactose throughout life most likely arose in ________
A) populations that live in cold climates
B) populations that live in wet climates
C) cultures that keep dairy herds
D) Native Americans
C
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Atomic nuclei contain protons and _______
A. moles B. neutrons C. isomers D. ions
In __________ speciation, populations in contact along a common border speciate. Fill in the blank(s) with the appropriate word(s)
After a young woman suffered a traumatic brain injury, she seemed clumsy and out-of-sorts. She was given a visual acuity test (the assessment for glasses) and general eye health exam, and her eyes were deemed healthy. Would these assessments be adequate to rule out any visual impairment resulting from the brain trauma?
A. Yes, her clumsiness is more likely attributable to inner ear damage. B. No, a neurological examination of her visual processing pathways would be necessary.
Crossing over between the A and B genes in a parental cell containing an AB chromosome and an ab chromosome yields which of the following ratios of parental:recombinant gametes?
A) 100:0 B) 75:25 C) 50:50 D) 25:75 E) The ratio depends on whether the parental cell is male or female.