The exchange of favors between genetically unrelated individuals, to the benefit of both, is termed ________
Fill in the blank(s) with correct word
reciprocity
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By the end of oogenesis, how many eggs are ready for fertilization?
a. 4 b. 3 c. 1 d. 2
Which of the following is NOT a key
characteristic of "life"? a. organization into cells b. response to environmental change c. reproduction d. inability to change e. using energy
Unlike eutherians, both monotremes and marsupials _____
A) lack nipples B) have some embryonic development outside the uterus C) lay eggs D) are found in Australia and Africa
A comet orchid has creamy white-colored flowers and a characteristic "tail" that contains the flower's nectar. This orchid does not emit a scent during daylight hours but is aromatic at night. The comet orchid is most likely pollinated by
A) windy nighttime conditions. B) pollen traveling on animal fur. C) a nocturnal pollinator. D) moisture from cool evenings.