By what mechanism did allele frequencies change due to the asteroid?
A) Allele frequencies did not change because of the asteroid.
B) The asteroid caused mutations in the fish population.
C) The asteroid changed the environment, so fish with allele S2 had increased fitness.
D) The asteroid killed fish because of their location, so the allele frequency changed by chance.
D) The asteroid killed fish because of their location, so the allele frequency changed by chance.
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At what step in meiosis do the daughter cells become haploid?
A. metaphase 2 B. anaphase 1 C. anaphase 2 D. prophase 2
What is the name of the field of biology that compares the development of different organisms in an attempt to understand ancestral relationships between organisms and the developmental mechanisms that bring about evolutionary change?
A. Pattern formation. B. Punctuated equlibrium. C. Cell biology. D. Evolutionary developmental biology. E. Endocrine biology.
Which of the following represents an example
of climate?
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Which of the following statements about anabolic steroids is false?
A) They cause a general buildup of muscle mass. B) They often cause the body to reduce its normal output of sex hormones. C) They promote bone growth. D) They can stimulate mood swings and violent behavior.