Exam 2: Biological Foundations: Heredity, Prenatal Development, and Birth

When many genes work together to determine a characteristic, there may be a large range of phenotypes that are expressed. Why is this?

The third stage of childbirth (labor) involves the expulsion of the afterbirth, also called the ________.

Which of the following properties is widely accepted with regard to the relationship between genes and behaviors?

List the different stages (phases) of childbirth and note what occurs to start and end each stage.

For 10 to 15% of new mothers, the baby blues extends into months of irritability, feelings of low self-worth and apathy, and sleep and appetite disturbances. This condition, called postpartum ________, can influence a child's development if it persists.

The research is now clear, and states that a pregnant woman may safely consume up to three glasses of red wine a week. Alternately, she may have the equivalent of four ounces of "hard liquor" or two standard sized cans or bottles of beer. These small amounts of alcohol have been found to be safe for the unborn child.

Lucy is currently expecting her first child, and she is talking to her friend Dale, who does not have any children of his own. Dale knows very little about human development, and asks Lucy how the food she eats gets to the developing child. Lucy smiles and shakes her head, before saying,

Steve is on a first date with Valerie, who is very enamored with his beautiful blue eyes. Steve's ________, or the physical expression of his genetic code, may have guaranteed him a second date!

Only a single sperm cell can successfully make the journey up a woman's Fallopian tube to an unfertilized egg.

Postpartum depression

Despite the fact that a human female has a normal pregnancy duration (or gestational period) of 38 weeks, people often refer to pregnancy as a 40-week event. Why is this?

The ________ is a structure that contains veins and arteries and connects a developing child to the placenta.

If a woman smokes cigarettes or other forms of tobacco during pregnancy, which of the following effects is MOST likely to occur?

Infant mortality rate is defined as the percentage of infants who die

When a phenotype reflects the combined activity and influence of many separate genes, the pattern is known as ________ inheritance.

If a physician informed you that your speech disorder was the result of problems on chromosomes 4, 7, and 15, you would rightly conclude that the disorder is always classifiable as

Pregnant Patty's body is currently experiencing the event that triggers hormonal changes that will prevent further menstruation. This event is called

During pregnancy, it is necessary for the mother to eat 10% to 20% more than regular in order to adequately provide for the needs of her unborn child.

Your authors point out that teenage women have a greater chance of having problems during their pregnancy, labor, and delivery than pregnant women in their 20s. They suggest that this is mainly because

Which of the following is NOT one of the chemical compounds that makes up a strand of DNA?