In female mammals, most genes on one of the two X chromosomes are permanently inaccessible, and

this phenomenon is called __________. Fill in the blank(s) with the appropriate word(s).


ANS: X chromosome inactivation PTS: 1 DIF: Moderate

Biology & Microbiology

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Which methods will move carbon dioxide into the atmosphere?

a. Aerobic respiration and burning of fossil fuels b. Burning of fossil fuels and sedimentation c. Sedimentation and photosynthesis d. Decomposition and diffusion e. Aerobic respiration and sedimentation

Biology & Microbiology

If the temperature of the skin is too low or too high, this information is conveyed to an area of the brain called the

A. cerebellum. B. hypothalamus. C. cerebrum. D. medulla oblongata. E. spinal cord.

Biology & Microbiology

Gamete formation is

a. the result of the process of mitosis. b. the pairing of homologous chromosomes. c. the formation of sex cells. d. the fusion of gametes. e. a process that occurs only in asexually reproducing forms

Biology & Microbiology

Which of the following is a DNA palindrome?

a) 5'GAAATTTC-3' b) 5'ACGTACGT-3' c) 5'AATTTTAA-3' d) 5'AAAATTTT-3' e) All of the above are palindromes

Biology & Microbiology