Moths evade bats by ____
a. becoming invisible to the bat's echolocation signals
b. flying in straight-line flight patterns
c. detecting the bats echolocation clicks
d. flying only in erratic patterns
e. flying primarily in the daylight hours
ANSWER: c
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Which of the following is true of both first- and second-division nondisjunction? (Choose all that apply)
A. Gametes are produced with extra chromosomes B. Gametes are produced with missing chromosomes C. Sister chromatids fail to separate D. Homologous chromosomes fail to separate E. Half of the gametes produced are wildtype, while half are mutated
What types of amino acids are most responsible for the binding of DNA to histones?
A. Hydrophobic amino acids B. Polar amino acids C. Positively charged amino acids D. Negatively charged amino acids
While phenotypically male, smaller testes, enlarged breasts, and reduced body hair are all signs of a non-disjunction error condition that results in an XXY genotype. Which kind of error results in XXY genotype, called Klinefelter syndrome?
a. point mutation b. deletion c. non-disjunction d. crossing over
You observe that chimps use sticks to collect termites for food. Which of the following would indicate this the use of the stick is a learned behavior?
A. The chimp is the only member of his or her population that exhibits this behavior. B. The chimp prefers eating termites to other types of insects. C. Food is abundant in the chimp's environment. D. Chimpanzees raised in isolation do not use sticks.