The stable presence of more than one allele for a particular gene in a population is called
a. balanced polymorphism.
b. mixed gene pool.
c. mutation pressure.
d. genetic drift.
e. competition.
A
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A goiter is caused by a deficiency in
a. thyroxine. b. triiodothyronine. c. calcium. d. iodine. e. both thyroxine and triiodothyronine
Every atom of the same element has an equal number of electrons and protons
Indicate whether the statement is true or false
What is the purpose of Taq polymerase in a PCR reaction?
A. DNA denaturation B. DNA synthesis C. heating of the reaction D. heating of the reaction and DNA denaturation E. primer annealing
The genetic code is fairly consistent among all organisms. The term often used to describe such consistency in the code is ________
A) trans-specific B) universal C) overlapping D) exceptional E) None of the above