Darwin calculated that if reproduction was not limited, a single pair of elephants would leave roughly ____
descendants after 750 years.
a. 750
b. 15,000
c. 150,000
d. 19 million
e. 190 million
ANSWER: d
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Biotechnology advances are important in medicine. Which field is interested in determining how drugs used to treat disease may be affected by an individual's genetic makeup?
A) cloning B) genetic engineering C) gene therapy D) pharmacogenomics
In the case of complete dominance in a population in equilibrium, we cannot tell which individuals are homozygous dominants and which are heterozygous, what information is needed to determine the frequency of homozygous dominant and heterozygous
genotypes? A) the size of the sample population B) the frequency of heterozygous recessive genotype C) the frequency of homozygous recessive genotype D) the mutation rate in the population
Silent copies of genes that have been inactivated by mutations are called
A. pseudogenes. B. clones. C. exons. D. introns.
Which one of the following correctly lists components of extracellular matrix found in animals?
A. collagen, laminin, and elastin B. collagen, lignin, laminin, and pectin C. lignin, pectin, and keratin D. cellulose, pectin, lignin