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

Beth is 12 weeks pregnant and concerned that her fetus may have a genetic disorder. Describe two techniques that a physician could use to determine whether Beth's concerns are warranted. Also discuss how fetal medicine could be used to deal with a disorder if one is identified.

Fraternal twins are also called _____ twins.

Common symptoms of fetal alcohol syndrome include facial deformities, deafness, and mental retardation.

Damage to cells in the embryo's ____ layer would be most likely to result in the development of a defective digestive system.

Following a prenatal exam, your physician remarks, "It appears as if your fetus has 47 chromosomes." What would be the most likely response to this information?

How is a physician most likely to guard against fetal hypoxia?

By the time Debbie got to the hospital to deliver her child, the child had entered the vaginal opening. This means that Debbie was in the ____ stage of labor.

How many of the following are potential teratogens: aspirin, nicotine, cocaine, caffeine?

If tallness is dominant and designated as "T," and shortness is recessive and designated as "s," who would likely be short?

The period of the _______ lasts for approximately two weeks.

If the four dominant alleles for intelligence are WXYZ and the recessive alleles for intelligence are wxyz, which of the following would be the most common inheritance pattern?

A new genetic disorder called "Blumberg's disease" is found to involve heterozygous alleles, is recessive, and is characterized by incomplete dominance. Discuss the implications of this description concerning the inheritance of this disorder.

A heritability coefficient is used to calculate the extent to which a characteristic is the result of genetics.

Genotype is to phenotype as

Which prenatal assessment technique results in a picture of the fetus?

Which individual with a genetic predisposition toward being extroverted is demonstrating successful niche-picking?

Which result would not support the idea that genes play a significant role in behavior?

The key lesson learned by the fact that thalidomide showed no impact when tested on prenatal rabbits but led to birth defects in prenatal humans is that

Identify and describe any three principles that govern how teratogens impact development.

Which statement concerning in vitro fertilization is False?