Exam 37: A: Genetics and Heredity

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

There are 44 autosomes in most human cells.

Homozygous refers to a trait that is determined by a single gene pair.

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.

Osteogenesis imperfecta is a recessive disorder of connective tissues.

Gene replacement therapy attempts to add genetically altered cells to the body.

The terms genetic disorder and congenital disorder are interchangeable.

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

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

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

Several human genes seem to have originated in bacteria.

If a mother is homozygous for normal skin color and the father is albino,none of their offspring will be albino.

Genetic diseases may be caused by abnormality in a single gene or by a chromosomal defect.

A mutagen causes a change in the genetic code.

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

Transcriptomics is the analysis of all the mRNA codes actually transcribed from the human genome.

The proteome is to proteins in the cell what the genome is to the DNA in the cell.

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

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

After age 35,a mother's chances of producing a trisomic child increase dramatically.