Genetic Inheritance and Testing Concepts

Helen receives her genetic test results, revealing an alteration in a gene linked to her heart condition. The discussion covers genetic inheritance, the probability of passing altered genes to children, and the implications for family members. Helen learns about the dominant nature of the gene alteration and the 50/50 chance of passing it to her children. The importance of informing family members, like her sister, about potential risks is emphasized.

What was the main finding from Helen's genetic test?

• No alterations were found.

• The test was inconclusive.

• An alteration in one of the genes was found.

• All genes were altered.

Why can't the specialist be sure that Helen inherited the gene alteration from her father?

• Because the alteration is not hereditary.

• Because the test results were lost.

• Because her mother was tested instead.

• Because her father was not tested.

What does it mean when a gene is described as 'dominant'?

• It is always inherited from the mother.

• It is the only gene present.

• It has no effect on the individual.

• It can cause symptoms even if a normal gene is present.

What is the probability that Helen will pass the altered gene to her children?

• 100%

• 0%

• 50%

• 25%

Why is it important for Helen's sister, Elizabeth, to be informed about the gene alteration?

• To ensure she doesn't have children.

• To get good advice and possibly prevent heart conditions.

• To avoid all physical activities.

• So she can change her diet.