Which of the following alleles is most likely to decrease in frequency in a population?
a. an allele that resulted in osteoporosis
b. an allele causing infertility
c. an allele that resulted in reduced intelligence
d. an allele that results in Alzheimer's disease
Answer: b. an allele causing infertility
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What is heterogeneity?
a. intra-species genetic variation b. similarity between species across habitats c. number of ecological niches d. endemic inbreeding
A(n) __________ (fungus-root) is a symbiotic interaction between a fungus and a plant. Fill in the blank(s) with the appropriate word(s)
Why is carbon monoxide deadly?
A) It binds to hemoglobin in white blood cells in place of oxygen. B) It binds to hemoglobin in red blood cells in place of oxygen. C) It binds to hemoglobin in red blood cells in place of carbon dioxide. D) It binds to hemoglobin in white blood cells in place of carbon dioxide.
The dominant vegetation of the temperate rain forest includes which of the following?
a. Sitka spruce b. western red oak c. beech d. bamboo e. Southern pine