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Laabri

Breast Cancer Transfer Task

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Last updated about 2 years ago
14 Nsɛmmisa
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1.

BRCA genes prevent cancer tumors from forming.

Everyone has two copies of the BRCA2 gene, one copy inherited from each parent. Even if a person inherits a BRCA2 mutation from one parent, they still have the normal copy of the BRCA2 gene from the other parent.

Cancer occurs when a second mutation happens that affects the normal copy of the gene, so the person no longer has a BRCA2 gene that works properly.

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2.

How many copies of the BRAC2 gene do people have?

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4.

State one notice about Figure 1.

YOU MUST USE NUMBERS FROM THE GRAPH

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5.

By what percentage does the BRCA mutation increase the risk for developing breast cancer and/or ovarian cancer for increased female breast cancer risk by age 50?

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6.

By what percentage does the BRCA mutation increase the risk for developing breast cancer and/or ovarian cancer for increased female breast cancer risk by age 70?

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7.

By what percentage does the BRCA mutation increase the risk for developing breast cancer and/or ovarian cancer for increased female 2nd breast cancer risk by age 70?

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Figure 2 shows the risk of breast cancer for BRCA2 patients who have different number of full term pregnancies before the age of 30

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9.

According to the graph, how does the number of full-term pregnancies before the age of 30 affect a BRCA2 patient's breast cancer risk?

Make a claim and provide 2 pieces of evidence from the graph.

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10.
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11.

What age range does the risk of breast cancer increase the most when multiple family members have breast cancer?

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12.

What is a mutation and how can a mutation lead to cancer?

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13.

Describe how mutated genes are passed through a family. Consider meiosis in your answer.

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14.

Why is it useful for patients who test positive for BRCA2 mutations to also see a genetic counselor and not just use the test results to make decisions? (In other words, why is knowing your genetic information not enough?

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8.

By what percentage does the BRCA mutation increase the risk for developing breast cancer and/or ovarian cancer for male breast cancer by age 70?