Which of the following is true concerning postnatal development?
a. Infancy is defined as the first two years of life after birth.
b. Senescence results in increased hormone secretion.
c. Postnatal development occurs before birth.
d. In general, boys experience their pre-adolescent growth spurt later than girls.
e. Early childhood is a time of rapid cell division in nerve cells.
D
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In the formation of recombinant DNA, what enzyme is needed to seal the sticky ends of genes into plasmids or chromosomes?
A. Primase B. DNA ligase C. DNA helicase D. DNA polymerase I E. DNA polymerase II
Climate experts predict that in the mountains of western North America
a. average temperatures will rise. b. there will be less snow. c. there will be drier forests. d. there will be more intense wildfires. e. all of these.
A type of natural selection in which organisms with phenotypes at both extremes of the phenotypic range are favored by the environment
Compare the use of biosensors with traditional methods of determining microbial contamination
What will be an ideal response?