Exam 24: Genetics and Genomics

A gene is

Genes determine all of our characteristics.

People with aneuploid sex chromosomes are more severely affected than people with aneuploid autosomes.

The chemical group that binds to DNA causing genomic imprinting is

In von Willebrand disease, which is either autosomal recessive or autosomal dominant, clotting time slows and the person bruises and bleeds easily. Not everyone who inherits the disease genotype actually develops the phenotype. Affected individuals have differing degrees of difficulty in clotting of blood. This condition is

Beard growth is a sex-influenced trait.

Identical alleles are said to be

Gametes pass genetic information from generation to generation.

Down syndrome is caused by

The term "exome" refers to

Janet is homozygous dominant for the wild-type allele of the gene that when mutant causes cystic fibrosis. Her brother Henry is a heterozygote. They both do not have the disease cystic fibrosis.

A bell curve is characteristic of the distribution of phenotypes of a multifactorial trait because

Cells from a woman with Turner syndrome have

Absence of the SRY gene and expression of the Wnt4 gene are necessary for female reproductive structures to develop in an embryo and fetus.

Which of the following chromosomal abnormalities most severely affect a fetus?

The muscle disorder myotonic dystrophy can be caused by different genes, on different chromosomes. This means that the condition is genetically heterogeneic.

A procedure used to obtain enough fetal tissue sampled through the cervix to test for genetic disorders without culturing cells is

An offspring of parents whose genotypes are Aa and Aa may be

An autosomal condition affects only males.

The two types of information needed to predict the inheritance pattern of a trait are