Which flower trait is associated with butterfly pollination?
a. bowl-shaped, closed during the day
b. strong, musty smells emitted at night
c. absence of nectar
d. dull flower colors, such as white or green
e. bright flower colors, such as red and purple
ANSWER: e
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Which of the following human populations likely evolved lactase persistence?
a. populations living on islands b. populations in which milk is a component of the diet throughout an individual’s life c. populations in which milk-derived products are essential for young individuals d. Lactase persistence will evolve in any population that has a strong need for digesting milk.
Some sponges are green because they
A. Are more like plants than animals B. Filter algae out of the water for food C. Have photosynthetic organisms in their tissues D. Are primary predators
When r = 0.00001, the population size:a
will increase. b. will decrease. c. is stable. d. may increase or decrease, depending on K. e. may increase or decrease, depending on i
How many nucleotides make up a codon?
A) two B) three C) four D) five