Exam 2: Heredity and Prenatal Development

How does the amniotic sac protect the embryo and fetus?

_____, also called German measles, is a viral infection passed on from the mother to the fetus that can cause birth defects such as deafness, intellectual disabilities, blindness, and heart disease in the embryo.

The determination of a child's sex depends on the:

_____ was a drug marketed in the 1960s to pregnant women that caused birth defects such as missing or stunted limbs in infants.

_____ are environmental agents that can harm the embryo or fetus.

Most victims of _____ die of respiratory infections in their 20s.

In the context of an average ejaculation, which of the following statements is true about sperm?

In the structure of deoxyribonucleic acid (DNA), which of the following bases combines with thymine?

Discuss the types of teratogens.

_____ is a type of estrogen, prescribed in the 1940s and 1950s to pregnant women, that is said to have caused testicular, vaginal, and cervical cancer in some offspring.

_________is self-propulsion. ​

Duchenne muscular dystrophy is a sex-linked abnormality.

Which of the following statements is true of menstruation?

Distinguish between Klinefelter syndrome and Turner syndrome.

Once the testes have developed in the embryo, they begin to produce male sex hormones, or _____.

The _________is the hollow organ within females in which the embryo and fetus develop. ​

Twins that derive from a single zygote that has split into two are called:

_________ is the process in which the double helix of deoxyribonucleic acid (DNA) duplicates. ​

Discuss the cause and effects of preeclampsia.

Which of the following statements is true of Down's syndrome?