Exam 2: Biological and Environmental Foundations

Family studies usually involve _____ studies and _____ studies.

Kentrall and Sharice just had a baby who was diagnosed with phenylketonuria (PKU). Describe this disorder. How can Kentrall and Sharice ensure that their son will not develop permanent intellectual disability?

The most widespread and routine method of prenatal diagnosis is _______.

Due to recent advances in genetics and fetal medicine, _______ can repair defects of the heart, lung, urinary tract and other areas.

According to the concept of incomplete dominance, a heterozygous person with the alleles for blood type A and B will have blood type O.

Down syndrome occurs in approximately 1 out of every ____ births.

If an ovum is fertilized by a(n) ____ sperm, a male fetus will develop. If an ovum is fertilized by a(n) ____ sperm, a female fetus will form.

Lu is from Korea and Pedro is from Ecuador. Lu and Pedro share ____ percent of their genes.

Prader-Willi and Angelman syndromes illustrate the concept of _____.

Gametes reproduce through _____.

Monozygotic twins are more common than dizygotic twins.

Twin studies help us estimate how much of a trait or behavior is attributable to _____, whereas adoption studies shed light on the extent to which attributes and behaviors are influenced by ______.

Sex cells produce _____.

C.J. and Naya are fraternal twins. They share about ____ percent of their genes.

The ______ contains genetic instructions that will cause the fetus to develop male reproductive organs.

Fragile X syndrome occurs more often in males than females.

Which of the following may result in mutated genes?

Some genes are passed through __________, in which some genes are always expressed, regardless of the gene they are paired with other. Others will only be expressed if paired with another recessive gene.

______ is a recessive disease that primarily affects descendants of Central and Eastern European Jews. There is no cure for this disease and most die by age 4.

Marcus and J.J grew up in the same neighborhood, which has a reputation for poverty and gang violence. Both of their fathers were violent alcoholics, and they experienced periodic homelessness. Marcus carries the low-MAOA gene, while J.J. carries the high-MAOA gene. Which statement about Marcus and J.J. is true?