An X-linked recessive gene (c) produces red-green color blindness. A normal woman whose father was color blind marries a color-blind man. What are the chances that the first son will be color blind?
A. 0%
B. 25%
C. 50%
D. 75%
E. 100%
Answer: C
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Four of the following have radial cleavage patterns. Which one is the exception?
a. snails b. salamanders c. earthworms d. sea stars e. mammals
Peripheral proteins are linked to either surface of the plasma membrane by:
a. covalent disulfide bonds. b. associating with fatty acids through hydrophobic interactions. c. embedding in one side of the membrane and, thus, not extending through to the other side. d. associating with glycoproteins on the inner membrane surface. e. bonding to integral proteins through noncovalent interactions
Which of the following tests would not distinguish Streptococcus from Staphylococcus?
A) Gram Stain B) Microscopic examination of bacterial arrangement C) Detecting the production of catalase
Cartilage is altered to improve flexibility in a program of regular stretching.
a. true b. false