Exam 7: Chromosomes and Human Genetics

An allele that "hides" in heterozygous carriers is called a ________ allele.

Most inherited human genetic disorders are inherited as ________ alleles.

During cell division a piece of a chromosome breaks off and reattaches to the same chromosome,but the piece is now in reverse order.How would this abnormality affect the chromosome?

In which of the following situations would looking at a pedigree be most useful?

Two copies of the same gene on a single chromosome would indicate a(n)________ had occurred.

Match each correct statement to the set of alleles listed below. -male affected by recessive sex-linked disease

Chromosomes that are NOT involved in determining gender are known as

Which of the following genotypes represents a human male?

A man with a translocation in a chromosome that does not affect gene function may not realize he has a translocation until he attempts to have a child.Explain how a translocation that does not affect the individual may become problematic during reproduction.

If a genetic disorder is caused by a dominant allele,individuals with which of the following genotypes would be affected by the disorder?

Sickle-cell disease is an inherited chronic blood disease caused by an autosomal recessive allele.Suppose a man who is homozygous recessive for the sickle-cell gene fathers a child by a woman who is a carrier for sickle-cell.What are the chances their children will exhibit the disease?

The karyotype shown is from a(n)

Which of the following is true of the genetic cross shown in the figure?

What characteristics of inheritance would allow you to distinguish whether a disorder is recessive autosomal,dominant autosomal,or sex-linked?

Every gene in a human occupies a specific position or ________ in their chromosomes.

What information in a pedigree would indicate a condition is likely dominant?

A parent who is a carrier for the recessive autosomal disorder B has the genotype ________.

The gender of a human child is determined by the

Match each correct statement to the set of alleles listed below. -recessive homozygous for an autosomal gene

The pedigree shown diagrams an X-linked gene.The individual indicated is ________ for the gene.