In which population size did the allelic frequencies change more quickly?
a. 100
b. 1000
a
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The floating leaf disk assay measures oxygen production as an indication of photosynthetic activity. What other substances could be measured as alternate ways of measuring photosynthesis?
What will be an ideal response?
Sperm swim from __________ to __________ for
fertilization. a. B; A b. D; C c. D; E d. C; D e. E; C
You arrive back in the United States after having visited a foreign country located on another continent. The customs agent stops the person in front of you and confiscates the fruit basket this person is bringing home
Being the knowledgeable person you are, you calmly explain to your enraged fellow traveler that the reason for the detainment is that the fruit basket may be ________. A) carrying endangered fruit B) carrying a non-native species that could damage North American ecosystems C) contaminated with CFCs that will damage the ozone layer above North America D) contaminated with sufficient DDT to cause serious harm to anyone who eats the fruit
Two or more alleles of a gene present at relatively high frequencies in a population's gene pool is known as ____.
A. disruptive selection B. sexual dimorphism C. directional selection D. stabilizing selection E. balanced polymorphism