Use the Following to Answer Questions

question 6

Multiple Choice

Use the following to answer questions:
There are numerous types of abnormal development of the human brain. For each term listed, select the appropriate alternative from the list below.
-lissencephaly ___

• A)aborted cell migration of gray matter
• B)absence of cerebral hemispheres, diencephalon, and midbrain
• C)failure to form sulci and gyri
• D)single undifferentiated hemisphere

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Definitions:

Molecular Evolution

The process by which genetic material undergoes changes in its molecular structure and sequences over generations.

BRCA1 Gene

A gene that produces a protein responsible for repairing DNA, where mutations can lead to an increased risk of breast and ovarian cancer.

Chromosome

A long, continuous thread of DNA that contains numerous genes and regulatory information, present in the nucleus of most living cells.

BRCA1 Gene

A gene that produces a protein playing a key role in repairing damaged DNA; mutations in BRCA1 can significantly increase the risk of breast and ovarian cancer.