TED-Ed: The cancer gene we all have - Michael Windelspecht

The video explains how the body regulates cell division and how cancer can disrupt this process. It highlights the role of the BRCA1 gene, a tumor suppressor, in controlling cell division and repairing DNA mutations. The video also discusses genetic variations in BRCA1 and their impact on cancer risk, emphasizing that ineffective BRCA1 can lead to uncontrolled cell division and tumor formation.

What is the primary issue in the body that leads to cancer development?

• Overproduction of hormones

• Excessive nutrient intake

• Inability to control cell division speed

• Lack of physical activity

Which gene is primarily responsible for regulating cell division and repairing DNA mutations?

• BRCA1

• TP53

• MYC

• EGFR

How does BRCA1 contribute to the cell cycle?

• By destroying damaged cells

• By repairing DNA mutations and regulating checkpoints

• By accelerating cell division

• By producing energy for the cell

What happens when BRCA1 is ineffective due to mutations?

• Cells become more specialized

• Cells with damaged DNA are prevented from dividing

• Cells stop dividing completely

• Cells accumulate additional mutations

Why is having two copies of the BRCA1 gene beneficial?

• It provides a backup if one copy is ineffective

• It increases the risk of cancer

• It allows for faster cell division

• It ensures cells never divide