Maternal inheritance patterns from generation to generation cannot be analyzed by simply studying the X chromosome in the way that paternal inheritance patterns can follow the Y chromosome because
A) the X chromosome is too large to analyze effectively.
B) the X chromosome sometimes exchanges genetic information with the Y chromosome.
C) the X chromosome is obtained from both the father and the mother.
D) one X chromosome is deactivated in females.
Answer: C
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A. troposphere B. envirosphere C. biosphere D. ionosphere
Rods and cones are located in the ____
a. lens b. cornea c. pupil d. iris e. retina
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A. 65 million years ago to 2 million years ago. B. 500 million years ago to 250 million years ago. C. 250 million years ago to 65 million years ago. D. 540 million years ago to 250 million years ago. E. one billion years ago to 500 million years ago.
Which of the following structures is exclusively associated with prokaryotic cells?
A) membrane-bound nucleus B) nucleoid C) chromosome D) ribosomes