3.1 and 3.2 Work

In the past, we have not formally gone over these sections, but I found that some students were at a disadvantage from not going over these concepts.  Please answer the following questions in your notebook and they will be checked off on Monday 2/13.

1. This is in 3.1. What is a gene?
2. Where are genes located?  Draw a diagram to help explain.
3. Look at the chart on p. 142 that compares numbers of genes in different species.  Which species has the most genes?  The least?  How many genes do humans have?
4. Discuss the above information.  Is it surprising?  Why don't humans have more genes than other organisms?
5. What are alleles?  Describe the differences between different alleles.  Where do these differences come from?
6. Do the DBQ on p. 145.
7. Read the section on sickle cell anemia and outline the genetic change that causes sickle cell and what it does to the blood cells and health of people suffering from sickle cell.
8. What is a genome?
9. Describe the carrying out and results of the Human Genome Project.
10. Now we're in 3.2.  Describe the bacterial chromosome.
11. What is a plasmid and where can it be found?  Are they replicated like the main bacterial chromosome?  Explain.
12. Describe the autoradiography technique used to measure DNA molecules.
13. Describe eukaryote chromosomes.
14. What are homologous chromosomes and where do they come from?
15. Do the DBQ on p. 153.
16. Look at the chart on p. 154 comparing genome size.  How is this comparison different from one that you looked at on p. 142?  Is it showing the same thing?  Are the results similar?
17. What is the difference between a haploid nucleus and a diploid nucleus?  Use humans as an example.
18. Explain why different species have different numbers of chromosomes.
19. Do the DBQ on p. 156.
20. What is the difference between an autosome and a sex chromosome?  How many autosomes do humans have?  How many sex chromosomes?
21. Discuss how the sex chromosomes determine sex in humans.
22. What is a karyogram?
23. How can karyograms be used to determine sex and diagnose chromosomal disorders in humans?
24. Do the DBQ on p. 159.