Humans are ____ animals
a. oviparous
b. viviparous
c. ovoviviparous
d. marsupial
e. parthenogenic
ANSWER: b
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Nucleotide substitutions are mutations that alter the ____________________, but not the ____________________, of nucleotides in a DNA molecule
Fill in the blank(s) with correct word
The forward thrust of swimming sharks is created by:
a. the pectoral fins. b. the pelvic fins. c. the dorsal fin. d. the caudal fin. e. the anal fin.
Suppose your mother has albinism, which is a recessive trait. Suppose also that your father has cystic fibrosis, which is also caused by a recessive trait. And, you learn that your father-in-law has albinism and cystic fibrosis. What are the odds that your first child will have both albinism and cystic fibrosis?
a. 1 in 2 b. 1 in 4 c. 1 in 8 d. 1 in 16
Which is true of interneurons?
A. They detect stimuli. B. They receive and send signals. C. They control muscles. D. They control glands. E. They have a long axon.