Exam 12: Units of Heredity: Chromosomes and Inheritance

Match the following. A) aneuploidy B) nondisjunction C) duplication D) translocation E) deletion -Non-homologous chromosomes have exchanged parts.

A karyotype you are viewing shows an extra piece of chromosome 1 attached to chromosome 22. What type of abnormality caused this?

A person who has a recessive disorder but does not have the disorder him or herself is said to be a/an:

Match the following. A) aneuploidy B) nondisjunction C) duplication D) translocation E) deletion -This event may occur during meiosis I or meiosis II.

If a daughter expresses an X-linked recessive gene, she probably inherited the trait from:

Who is a "carrier" of X-linked disorders, such as hemophilia and color blindness?

The human genome has how many pairs of autosomal chromosomes?

Genes not found on the sex chromosomes will be found on:

Hemophilia, Duchenne muscular dystrophy, and color blindness are examples of ________ disorders.

Match the following. A) aneuploidy B) nondisjunction C) duplication D) translocation E) deletion -This produces cri-du-chat syndrome.

A woman who is a carrier for the hemophilia gene has a child with a man who does not have hemophilia. Which prediction is correct?

Duchenne muscular dystrophy is a recessive disorder resulting in a wasting away of the muscles. How would you design a study to determine if the disorder is X-linked or autosomal? How would you be able to determine if it is X-linked or autosomal?

A woman is missing one of her X chromosomes. With which of the following conditions would she be diagnosed?

A study of several pedigrees demonstrates that two parents are normal. If some of their children express a trait, then the trait is controlled by a:

Regarding the human sex chromosomes, which statement is correct?

You are tracking the inheritance of a genetic disorder through a family's pedigree, and you notice that it shows up in every generation. The disorder is most likely:

The condition in which an organism has more than two sets of chromosomes is called ________, while having either more or fewer than the normal number of a particular chromosome is called ________.

If a diploid cell from an organism has 46 chromosomes, how many chromosomes are likely to be found in a gamete that is the result of nondisjunction?

A person with the genotype XO is mainly female, phenotypically. A person with the genotype XXY is mainly male. What can you conclude about the Y chromosome?

What condition is caused by a dominant allele of a single gene?