A species is found to exist in one of three colors. Assuming an epistatic interaction, how many genes would be
involved?
a. zero
b. one
c. two
d. three
e. six
ANSWER: c
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When studying fluid and electrolyte loss during exercise, Robert Cade found that human sweat has sodium and chloride concentrations that are ______ those found in the blood.
A. higher than B. lower than C. equal to D. extremely variable from person to person relative to E. There is no sodium or chloride in sweat.
You would not have an autoimmune disease if you were suffering from
A. rheumatoid arthritis. B. lupus. C. Graves' disease. D. type I diabetes. E. polio.
What event marks the end of zygotene?
a) the beginning of genetic recombination b) the end of synapsis c) the start of metaphase d) the formation of the synaptonemal complex e) the beginning of synapsis
Why do food chains rarely have more than three or four links?
What will be an ideal response?