Which of the following is a correct pairing of a base to the product of its deamination?
A. thymidine ? uracil
B. cytosine ? thymine
C. adenine ? xanthine
D. guanine ? hypoxanthine
E. 5-methylcytosine ? thymine
E
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In an average person, ____ erythrocytes are produced each second
a. 200 to 300 b. 2,000 to 3,000 c. 2 to 3 million d. 4.8 to 5.4 million e. 2 to 3 billion
During thermoregulation, how does an endotherm respond to a high body temperature?
A) Blood vessels near the skin dilate. B) Blood vessels near the skin constrict. C) The brain shuts down to prevent damage. D) Blood glucose levels increase to stimulate metabolism.
When a Xenopus oocyte is stimulated with the hormone progesterone, it enters meiosis and arrests at ______, awaiting fertilization by a sperm.
a. prophase I b. metaphase I c. prophase II d. metaphase II
An analysis of the susceptibility to major depressive disorder in monozygotic twins separated at birth revealed that the broad-sense heritability of this trait is 0.10 and its total phenotypic variance is 0.25
What is the variance of the genotypic value of this disorder? Show your work. What will be an ideal response?