Muller's ratchet posits that in a finite asexual population, the number of deleterious alleles will increase over time. The accumulation of these deleterious alleles is called ________
A) inbreeding
B) linkage equilibrium
C) linkage disequilibrium
D) genetic load
D
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Bacteria are useful to study because
A. they produce protein in a similar manner to more complex organisms. B. they replicate DNA in a similar manner to more complex organisms. C. they produce energy in a similar manner to more complex organisms. D. they are grown quickly, easily, and cheaply. E. All of the choices are correct.
The two types of bonding found in a DNA
molecule are
a. ionic and covalent. b. covalent and peptide. c. ionic and hydrogen. d. peptide and hydrogen. e. covalent and hydrogen
Cancer cells ____
a. have normal plasma membranes. b. have an increased ability to attach to other cells. c. divide slowly to produce low densities of cells.
d. show an amplified reliance on ATP formation by fermentation. e. are all malignant.
The most common intestinal disorder is
a. ulcers. b. appendicitis. c. Crohn's disease. d. diverticulitis. e. irritable bowel syndrome.