Exam 48: Genetics and Heredity

Match each condition with its corresponding statement or definition. -Condition in which abnormal lipids accumulate in the brain and cause tissue damage leading to death by age 4

Gene linkage decreases the likelihood of genetic variation among the offspring of a single set of parents.

Give a brief description of one genetic disorder that is the result of nondisjunction during formation of the gametes.

Explain the structure of the chromosome. What is the difference between a chromosome and chromatin?

Disease genes never provide biological advantages for human populations, regardless of the circumstances.

Match each term with its corresponding definition or description. -Long arm of the chromosome

One form of gene therapy uses bacteria-like DNA plasmids to carry therapeutic genes to a cell.

There is no such thing as a homozygous color-blind female.

Theoretically, the best chance for producing a girl infant would be for insemination to occur on the day of ovulation.

Coding portions of DNA tend to lie in clusters rich in which two nucleotides?

An ideogram and a pedigree show almost the same information.

Red-green color blindness shows X-linked recessive inheritance. Assume "X" is normal, "X1" is recessive for the trait, and "Y" is normal. Then, an individual with the genotype "XX1" will be a:

Cystic fibrosis, caused by recessive genes in chromosome pair 7, results in the impairment of the:

Exons are removed from transcribed RNA to form the functional mRNA strand.

Genomics is the science of the analysis of the genome's code.

There are no normal alpha hemoglobin chains in a person with sickle cell anemia.

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

Match each condition with its corresponding statement or definition. -Condition that causes blindness; characterized by lumps of melanin in the retina of eyes

When one or more DNA nucleotides are missing in a gene, it can be called a(n):

All mutations are caused by some external force such as radiation or certain viruses.