Calculate the narrow-sense heritability of height between aunts and neices if the observed phenotypic correlation coefficient is 0.1
A. 0.4
B. 2.5
C. 4
D. 0.25
A
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Marjorie Weber and Anurag Agrawal of Cornell University hypothesized that parts of a plant do not play a direct role in reproduction but act as a "protection racket." What is "protection racket"?
A. the plant's ability to swat off predators B. the plant's ability to attract insects to feed from the nectar and protect the plant at the same time C. the plant's ability to attract insects that could potentially harm it D. the insect's ability to evade the plant's defenses E. the insect's ability to accidently fertilize the plant while feeding on the nectar
The first jawless fishes evolved by about ____ million years ago
a. 120 b. 270 c. 380 d. 480 e. 650
Predators can switch to alternative prey when a
prey species is low in abundance as is shown in a. type I response. b. type II response. c. type III response. d. types I and II. e. none of these.
The transfer of energy directly from a photoexcited electron in a pigment molecule to another electron in an adjacent pigment molecule occurs by
A) photoexcitation. B) photochemical reduction C) photophosphorylation. D) resonance energy transfer. E) photorespiration.