Long Weekend Homework

Due date: Wednesday November 12
Please read Sources of Genetic Recombination p.565-567

• In your notebook describe the following:

1. What is independent Assortment? When does it happen and why? Make a drawing to illustrate the concept.
2. What is crossing-over? When does it happen and why? Make a drawing to illustrate the concept.
3. What means nondisjunction? Explain what happens during anaphase I and II of meiosis.
4. Define the term monosomy and trisomy. Give an example of a disorder that is caused by monosomy and trisomy.

Please read Cell division and the Conception of Twins p. 570

• Explain how the development of fraternal twins is different from the development of identical twins.