Exam 48: Genetics and Heredity

In a dominant/recessive trait, the heterozygous person would look like the homozygous person.

Nondisjunction results in gametes that produce trisomy but not monosomy in the cells of offspring.

Match each of the terms with its corresponding definition. -Genotype with two different genes for one trait

Which of the following diseases is not a single-gene recessive trait?

Match each of the terms with its corresponding definition. -Pair of chromosomes in the human genome that determine sex

A color-blind woman must have had a color-blind father.

Phenylketonuria is caused by dominant genes that fail to produce the enzyme phenylalanine hydroxylase.

Crossing over is the process during which:

Assume that "A" is dominant for normal skin color and "a" is recessive for albinism. The parents with which of the following genotypes could have a child with albinism?

Fortunately, individuals with Klinefelter syndrome generally are not sterile.

A pedigree is a chart that illustrates genetic relationships in a family over several generations.

For a karyotype to be an effective predictor of genetic problems, it must be able to go back several generations.

Each DNA molecule may be called a:

The sickle-cell gene produces an abnormal protein chain in the hemoglobin molecule.

Because the Y chromosome is smaller than the X chromosome, geneticists have found that only about 25% of the clinically significant sex-linked traits are found on the Y chromosome.