Exam 2: Heredity, Environment, and Prenatal Development

What happens to the zygote if cell division does not occur normally in the germinal period?

Genetic counselors gather family information and discuss with potential parents the likelihood that:

Which is not a basic principle of teratogenic influences?

Pregnancy tests work by detecting hCG in a woman's urine.

The sections of DNA that control the development of inherited characteristics is known as:

For each matching pair of chromosomes, two versions of each gene exist, one from the mother and one from the father. Each version is called an:

A medicine once prescribed to pregnant women to prevent miscarriages has been found to create reproductive defects, cancer, and other genital irregularities in their offspring. This drug is:

In males, gametes are known as:

Describe the fetus from 8 to 12 weeks' gestation.

What percentage of live births is the result of an unintended pregnancy?

Which is a possible cause of genetic mutation?

How many weeks after conception will the brain have the shape of an adult brain?

An inherited disorder in which blood fails to clot normally is known as:

Give two reasons why multibirths are on the rise and what risks are associated with them.

People who have Klinefelter's syndrome have a chromosomal abnormality that includes:

The most common cause of infertility in couples is:

An X-linked disorder in which a gene is unable to produce enough of a protein crucial to the functioning of the central nervous system is known as:

Within a week after conception, the blastocyst will contain at least:

Experts estimate that 25%-40% of pregnancies end in the germinal period without the woman knowing she was pregnant.

Describe the process of how a zygote receives 23 pairs of chromosomes.