Chapter 9
Biology: The Essentials · 7 exercises
Problem 1
Explain why evolution often selects traits that promote genetic diversity.
6 step solution
Problem 2
Most cells in a sexually reproducing organism have two sets of chromosomes. Explain this observation and describe its significance to meiosis.
4 step solution
Problem 4
What is the difference between haploid and diploid cells? Are your skin cells haploid or diploid? What about gametes?
4 step solution
Problem 5
In some animals, females can reproduce by themselves - that is, without males. In this process, called parthenogenesis, the young develop from unfertilized eggs. Use the Internet to find a species that uses parthenogenesis. How does parthenogenesis work in that species? What are the differences between meiosis in that species and the events of "typical" meiosis?
3 step solution
Problem 6
How are mitosis and meiosis different?
6 step solution
Problem 7
Draw all possible metaphase I chromosomal arrangements for a cell with a diploid number of 8.
5 step solution
Problem 9
List some examples of chromosomal abnormalities, and explain how each relates to an error in meiosis.
6 step solution