Exam 5: Heredity and Disease

The Y chromosome is _____.

Polydactyly is a condition of extra _____.

Forty-four of the chromosomes are called _____.

Familial hypercholesterolemia is an _____ disorder.

Marfan syndrome is an _____ disorder.

Specialized cells in the ovaries and testis, divide by a process called _____, during which each of the 23 pairs of chromosomes are separated.

Achondroplasia is an _____ disorder.

In the cause of familial diseases, there does not seem to be a single gene, but the effect of several genes working together, called a _____ trait.

Inside the nucleus, DNA is packaged with proteins into _____.

The loss of an autosomal chromosome is usually incompatible with life.

Some alleles always produce their trait when inherited and are said to be _____.

Normally, each person has forty-four (twenty-two pairs)chromosomes.

Sickle cell anemia is an _____ disorder.

Abnormalities of sex-linked inheritance tend to occur more frequently in _____.

Cystic fibrosis affects the glands that secrete mucus, leading to recurrent, severe respiratory infections and gastrointestinal disorders.

Achondroplasia results in achondroplastic dwarfism.

Cleft lip and cleft palate are a _____ disorder.

Hydrocephalus is a _____ disorder.

The four chemical bases that make up DNA are adenine, thymine, guanine, and cystosine.

Polydactyly is an _____ disorder.