Natural selection __________.
A. relies on variation among individuals in a population
B. is independent of time or place
C. and evolution cannot be directly observed
D. is more of a creative process than an editing process
A. relies on variation among individuals in a population
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Antidiuretic hormone and oxytocin are products of
a. endocrine glands. b. neurosecretory cells. c. blood capillaries. d. the anterior pituitary. e. kidney and uterine wall cells, respectively.
In some organisms, a normal stop codon, UGA, encodes for the amino acid
A) leucine. B) arginine. C) isoleucine. D) selenocysteine. E) cysteine.
Which of the following is a correct interpretation of the wings of bats and the wings of birds?
a. They are analogous because they have a similar internal bone structure inherited from a common ancestor. b. They are homologous because they are adapted for the same function. c. They are homologous because they have a similar internal bone structure inherited from a common ancestor. d. They are analogous because the common ancestor of bats and birds had wings.
The bacterial chromosome
A) Forms a single linear strand of DNA B) Is part of the nucleoid C) All of these choices are correct D) Contains all the cell's plasmids E) Is located in the cell membrane