According to Charles Darwin, “HOMOLOGOUS” structures are anatomically because:
a. They serve the same functions
b. They are inherited from a common ancestor
c. They are inherited from different ancestors
d. Both a and b
Answer: b. They are inherited from a common ancestor
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Which of the following mutualistic relationships have the largest impact on population dynamics?
A) obligate mutualists B) generalist pollinators C) nitrogen-fixing bacteria D) seed-dispersing animals
Compare and contrast the structure of an herbaceous eudicot stem and that of a monocot. What will be an ideal response?
Studies have found that the positive-incentive value of various tastes is _________ in anorexic patients than in control patients.
(a) lower (b) higher (c) more likely to be absent (d) more variable
A YAC is
a. a vector for cloning genes into yeast cells. b. a Yeast Activating Complex for inducing expression of genes. c. a sequence that allows selection of successfully transformed bacteria. d. a technique for separating DNA fragments according to size. e. a type of DNA polymerase used in PCR.