Exam 48: Genetics and Heredity

A Punnett square or a pedigree can only predict the probability or possibility of passing on a trait to an offspring.

Fortunately, individuals with Klinefelter syndrome generally are not sterile.

A genetic disease or condition that requires a specific environmental condition for expression is called a genetic predisposition.

Match each term with its corresponding definition or description. -Analysis of the genome code

Match each of the terms with its corresponding definition. -Genes that have effects that do not appear in the offspring when they are masked by a dominant gene

What is a genetic mutation? What types of genetic mutations are there and what are some causes of mutation?

Genetic mutations are always harmful.

Discuss genetic counseling. Include in your discussion an explanation of a pedigree, the Punnett square, and a karyotype.

Thalassemia is an example of a chromosomal abnormality involving trisomy of the 23rd chromosome.

Cleft palate can be classified as both a congenital and genetic disorder.

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

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

Match each of the terms with its corresponding definition. -Type of dominance in which two dominant versions of a trait are both expressed in the same person

The inheritance of a genetic risk factor is not sufficient to cause a disease.

When did the scientific study of genetics begin? Give a brief summary of what happened.

The human genome contains about _____ genes.

People with sickle-cell trait must be heterozygous.

A mutagen causes a change in the genetic code.

Match each term with its corresponding definition or description. -The entire collection of genetic material in a typical cell

For an individual to have Down syndrome, one of the gametes had to have contained 24 chromosomes.