Genetic Variation Video Lessons

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Problem: Carriers of cystic fibrosis have some protection against intestinal infections such as cholera. However, people with two copies of the cystic fibrosis allele develop a life-threatening disease. The mutant allele is very common in people of northern European descent because of: a.  Disruptive selectionb.  Directional selectionc.  Artificial selectiond.  Sexual selectione.  Stabilizing selection

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Problem Details

Carriers of cystic fibrosis have some protection against intestinal infections such as cholera. However, people with two copies of the cystic fibrosis allele develop a life-threatening disease. The mutant allele is very common in people of northern European descent because of: 

a.  Disruptive selection

b.  Directional selection

c.  Artificial selection

d.  Sexual selection

e.  Stabilizing selection

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Our tutors have indicated that to solve this problem you will need to apply the Genetic Variation concept. You can view video lessons to learn Genetic Variation. Or if you need more Genetic Variation practice, you can also practice Genetic Variation practice problems.

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Based on our data, we think this problem is relevant for Professor Firooznia's class at CCNY.