Is most of our DNA made up of genes?
A. No, genes make about 25% of our DNA
B. No, genes make up only 1.5% of our DNA.
C. No, genes make about 50% of our DNA
D. Yes, the vast majority of human DNA consists of genes.
Answer: B
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Why do lymph nodes swell during an infection?
a. Macrophages accumulate in them. b. Bacteria accumulate in them. c. T cells accumulate in them. d. Production of lymphatic fluid increases. e. Production of mucous increases.
The five-year survival rate of ____________________ cancer is only 13%. Fill in the blank(s) with the appropriate word(s)
If the heritability of criminality is 0.55 in twin studies, what inference can be made about "nature versus nurture" for determining criminality?
a. Children of criminal have a 55% chance of becoming criminals b. Criminal is mainly due to differences in environmental conditions. c. Equal chances exist for any chiold to become a criminal if raised in that environment d. Fifty-five percent of the variability is due to differences in genotypes.
Based on the fossil record, compared to the number of species alive today, the number that are extinct is ________, but there may be ________ now than at any time before
Fill in the blank(s) with the appropriate word(s).