What is not one of the top three environmental factors leading to disease in low- and middle-income countries?
A. Urban air pollution
B. Unhealthy urban lifestyle
C. Unsafe water, hygiene, and excreta disposal
D. Indoor air pollution
Answer: B. Unhealthy urban lifestyle
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What would be the frequency of pink flowers in a population where the allele frequency of CR is 0.4 and the population is in Hardy-Weinberg equilibrium? Assume that CR CR is red, CRCW is pink, and CwCw is white.
A. 0.04 or 4% B. 0.16 or 16% C. 0.2 or 20% D. 0.8 or 80% E. 0.48 or 48%
The bittern in the above figure is using ____ for protection
a. mimicry b. display behavior c. warning coloration d. chemical defenses e. camouflage
An ecologist who focuses on the individual could study all of the following, except
A) morphology. B) physiology. C) behavior. D) death rate.
Quantitative inheritance involves the interaction of a number of gene loci. The pattern of genetic transmission typical of quantitative inheritance is ________
A) continuous variation of phenotypic expression B) usually a pattern that clearly reflects dominance and recessiveness C) discontinuous distributions such as 3:1 D) typical of Mendelian inheritance E) a 9:3:3:1 ratio