Exam 3: Genes, Environment, and Development

Despite the fact that it is the result of recessive genes, some carriers of sickle-cell disease possess both normal and sickle-shaped blood cells. This phenomenon is best explained by

If a physician wanted to get a visual image of a developing fetus' limbs, her best option would be to use a(n)

Marcia has just given birth to a baby girl. She is concerned because she is a carrier for hemophilia. Which of the following is true?

Which type of study would be most likely to compare unrelated siblings living in the same household?

Dr. Spock is using a microscope to observe a reproductive germ cell. He suddenly remarks, "That cell just underwent meiosis!" What has Dr. Spock just seen?

The idea that some genes aid in adaptation more than others is known as

If shared environmental influences alone contribute to the expression of a trait, which of the following patterns of correlations would be observed?

Fraternal twin siblings share

Characteristics that result from the influence of multiple pairs of genes are called _____ traits.

Who has the set of chromosomes found in a typical female?

Some individuals decide not to be tested for _____ because they fear discrimination.

Color blindness and hemophilia are examples of

When looking at the unusual protrusion sticking out of a newborn's head, Dr. Natas says, "I am sure that the growth is due to some sudden change in the structure of the genes that was not passed on by the parents." This means that Dr. Natas suspects that the growth is due to

Fraga and colleagues (2005) study on aging and RNA in identical twins found that the pattern of genetic expression

The process of mitosis results in daughter cells that have half the number of cells as the original one.

A genotype is a person's genetic make-up, while a(n) _____ are the actual traits he or she expresses.

Your text reveals that if one identical twin is gay, there is almost a 50 percent chance that the other identical twin will also be gay. On the other hand, if a fraternal twin is schizophrenic, there is only about a 20 percent chance the other fraternal twin will be schizophrenic. The measure of likelihood that twins will share this mental illness in common is called a(n)

Research by Plomin and colleagues indicated that the highest heritability correlation concerning the emotion of anger was found between

A(n) _____ gene-environment relationship exists when a child's genotype causes him or her to seek out some specific environment.

Statistically, for every 250 births, you would expect _____ pair(s) of identical twins.