1. What is crossing over? Why is crossing over important to genetic diversity? 2. What are the products of meiosis? 3. When Mendel bred pea plants that differed in a single trait, what did he see in...

1. What is crossing over? Why is crossing over important to genetic diversity?

2. What are the products of meiosis?

3. When Mendel bred pea plants that differed in a single trait, what did he see in the offspring? When Mendel allowed these offspring to self-fertilize, what did he see?

Q561

1. What does Mendel’s principle of independent assortment tell us?

2. What is codominance? Provide an example of codominance.

3. Why does Mendel’s law of independent assortment hold for his pea traits but not for all genes?

Q562

1. Why are recessive sex-linked traits seen more often in males than in females?

2. How many genes does a human have?

3. What is an SNP?

4. Is cancer usually the result of a single genetic mutation?

5. What is the difference between an oncogene and a tumor-suppressor gene?