Pigments in chloroplasts:
a. melanin
b. keratin
c. chlorophyll
Ans: c. chlorophyll
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Being born with extra fingers on a hand is called polydactyly. This is more common in some populations in North America than others due to ____.
A. natural selection in favor of extra fingers in these populations B. random mating with other populations in North America C. an increase in mutation rate in these populations D. a founder effect because their ancestors from Europe carried the alleles E. migration of people with multiple fingers out of the population
An example of a retrovirus in the human genome is the ________ family of sequences.
Fill in the blank(s) with the appropriate word(s).
A gene discovery technique that looks at regions of the genome where individuals have the same alleles much more often than expected by chance, because their ancestors were blood relatives, is called
A) homozygosity mapping. B) heterozygosity mapping. C) the defective sibling pair approach. D) empiric risk.
The _________ phase is the preparatory phase; it often begins with the sight, smell, or even just the thought of food.
(a) absorptive (b) cephalic (c) expulsion (d) fasting