Which of the following mutations would increase evolutionary fitness?
A) One that increases the frequency of successful reproduction
B) One that increases the life span of the organism
C) One that removes other alleles from the population
D) One that attracts more potential mates without increasing the frequency of reproduction
E) One that increases the birth weight of offspring while decreasing the number of offspring
A
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Acid rain occurs when
a. carbon dioxide combines with water in the atmosphere. b. phosphorus-rich water in lakes evaporates to form phosphoric acid. c. sulfur released in burning fossil fuels combines with water in the atmosphere. d. excess hydrogen is released into the atmosphere where ozone is formed. e. bacteria in the soil break down nitrates to nitrogen gas, which then combines with moisture in the atmosphere to form nitric acid.
Which of the following sequences correctly describes the movement of air in a bird's respiratory
system? a. lungs; anterior air sacs; posterior air sacs b. anterior air sacs; posterior air sac; lungs c. posterior air sacs; lungs; anterior air sacs d. lungs; posterior air sacs; anterior air sacs e. anterior air sacs; lungs; posterior air sacs
Refer to the accompanying figure. The structure labeled as 2 is the:a
a. neural plate
b. neural fold
c. notochord
d. somite
e. neural crest
Which statement about phenotype is false?
A. The phenotype is what the environment acts on B. A behavior is a phenotype C. Phenotypes are typically affected by a single genetic locus D. The phenotype is what natural selection acts on