Chapter 2: Genetic and Environmental Foundations

Midpoint Review

Can you place the labels: DNA, gene, chromosome?

Chromosomes

• What does this show?• What are the

autosomes?• What are the sex

chromosomes?

Genotype, phenotype and alleles

• What is the phenotype for this character’s eye color?

• What is the genotype?• What are some possible

alleles for eye color?• Is the character

heterozygous or homozygous for eye color? What about hair color?

Still to come in chapter 2

• Genetic inheritance• Genetic abnormalities• Reproductive choices• Environmental contexts for development• Heredity and behavior

Chapter 3 Quiz1) Name the three periods of prenatal development that occur between conception and birth.

a.b.c.

2) Valerie, two months pregnant, wonders how food and oxygen are delivered to the

developing organism. You should tell Valerie that the __________ performs this function.

A) chorion B) amnion C) placenta D) neural tube

3) All teratogens are equally harmful during the prenatal period. T/F 

4) In a typical, healthy pregnancy, it (is/is not) necessary to receive prenatal health care.