Which of the Following Would Explain Two Chromosomes in an Individual

question 39

Multiple Choice

Which of the following would explain two chromosomes in an individual cell that contain some,but not all,of the same genes at the same loci?

• A) Both of the chromosomes are paternal.
• B) Both of the chromosomes are maternal.
• C) The chromosomes are from a common ancestor.
• D) A chromosomal alteration has occurred.

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Definitions:

T-Cell Receptor

A molecule found on the surface of T cells that is responsible for recognizing fragments of antigens as peptides bound to major histocompatibility complex (MHC) molecules.

CD8 Glycoprotein

A surface protein found on certain immune cells, such as cytotoxic T cells, involved in the immune response.

CD4 Glycoprotein

A protein on the surface of immune cells, such as T helper cells, that is involved in initiating the immune response.

Cytotoxic T

A type of lymphocyte (T cell) that kills cancer cells, cells that are infected (particularly with viruses), or cells that are damaged in other ways.