Studies Show That Despite Causing a Significant Risk of Hereditary

question 44

Multiple Choice

Studies show that despite causing a significant risk of hereditary breast cancer, the BRCA1 gene has undergone strong positive selection. One hypothesis for this is that

• A) BRCA1 mutations prevent viruses from using human cellular machinery to replicate.
• B) mutated BRCA1 genes provided some resistance to diseases like malaria.
• C) the BRCA1 gene is on the same chromosome as the gene that controls lactose tolerance.
• D) mutations in tumor-suppressor genes are usually favored by natural selection.

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Definitions:

Attending

Process of focusing on a particular sound or message.

Listening Process

The active and purposeful process of hearing, understanding, remembering, evaluating, and responding to spoken messages.

Analytical

pertains to the systematic examination of something by breaking it down into its constituent parts for better understanding.

Listening Style

refers to an individual's preferred way of receiving and processing auditory information, which can include active, passive, critical, and empathetic listening among others.