Overhunting of the northern elephant seals left only twenty individuals, from which the modern population arose. As a
result, each animal is most likely ____ for most alleles.
a. recessive
b. dominant
c. homozygous
d. heterozygous
e. co-dominant
ANSWER: c
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The function of RNA polymerase is to
A) catalyze the formation of phosphodiester bonds between deoxyribonucleotids. B) catalyze the formation of phosphodiester bonds between ribonucleotides. C) cleave mRNA to remove introns. D) activate tRNAs.
Sitting in the sun on a hot day, a dog starts to pant and finally gets up and moves into the
shade. These activities help the dog maintain a constant body temperature; thus, this is an example of what process found in all living organism?
a. energy acquisition b. reproduction c. homeostasis d. evolution
The logic behind sequential polar body analysis is based on
A) Darwin's theory of natural selection. B) Mendel's law of segregation. C) Mendel's law of independent assortment. D) the rules of the genetic code.
If two alleles exist for a characteristic (A and a) and allele 'a' is lethal in homozygous individuals,
A. the frequency of the 'a' allele will remain constant. B. the 'a' allele will be eliminated from the population. C. the ‘a' allele is not likely to be eliminated from the population. D. the frequency of the 'a' allele will increase.