O It has evolved under strong negative selection in humans O Possession of the allele results in a greater than 50% chance of developing breast cancer O The dN/ds >1 O One likely hypothesis for its presence is that also is important in combating viral infections

O It has evolved under strong negative selection in humans O Possession of the allele results in a greater than 50% chance of developing breast cancer O The dN/ds >1 O One likely hypothesis for its presence is that also is important in combating viral infections

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter5: The Inheritance Of Complex Traits

Section: Chapter Questions

Problem 8QP: Clubfoot is a common congenital birth defect. This defect is caused by a number of genes but appears...

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Concept explainers

Respiratory Infections

Respiratory infections are infectious diseases of the respiratory tract that are mostly caused by bacteria and viruses. They cause infections of the throat, sinuses, airway path, and lungs. Respiratory infections are typically divided into two types: upper tract respiratory infection and lower tract respiratory infection.

Question

Which of the following statements about the breast cancer-causing BRCA1 allele is false?
O It has evolved under strong negative selection in humans
O Possession of the allele results in a greater than 50% chance of developing breast cancer
O The dN/ds >1
O One likely hypothesis for its presence is that also is important in combating viral infections
Ne

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