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Quiz 2

Genes contain instructions for making DNA. False
Each human has 23 pairs of chromosomes in each cell. True
Stem cells are cells from which any other specialized type of cell can form. True
Because of cell specialization a cell for an arm can switch functions to develop an ear. False
Humans and chimpanzees have 99% of their genes in common. True
The first two weeks of prenatal development are called the germinal period. True
The determining factor in whether a preterm baby will survive or not is birth weight. False
Behavioral teratogens are those that harm the brain. True
A teratogen is a substance or disease that, when present, always results in a birth defect. False
A reflex is an involuntary response to a stimulus. True
Created by: smaldonado