Chapter 10 and 12

Chapter 10 Mendel and Meiosis Expectations

By the end of the chapter you should have the following completed:

1. Be able to define and give an example when appropriate of:
Group A: meiosis, haploid, diploid, homologous chromsomes, gametes, crossing over, sexual reproduction

Group B: genetics, dominant, recessive, phenotype, genotype, homozygous, heterozygous, allele,

2. All sections of the chapter should be read with the goal of being able to discuss/explain the information contained in them. Note: since the meiosis part of the chapter has already been studied, it need not be read or the vocab done.

Section 10.2 Meiosis

Section 10.1 Mendel's Laws of Heredity

3. Have the following expectation questions completely answered:
Group 1: Meiosis
1. How are the cells at the beginning and end of meiosis different? Use the terms chromosome number, haploid and diploid in your answer. (Right There)
2. How does meiosis help in maintaining a constant number of chromosomes in a species? (Think & Search)
3. How does crossing over help to provide genetic variation in a species? (Think & Search)
4. If the diploid number of a fruit fly cell is 8, how many chromosomes would be in a fruit fly egg? explain. (Author & U)
5. Explain why crossing over does not occur in mitosis. (On Your Own)

Group 2 Mendel’s Laws of Heredity

1. Use a Punnett Square to explain how a dominant allele masks the presence of a recessive one. (right there)

2. What is the difference between genotype and phenotype? (right there)
3.Apply the Law of Segregation of Alleles and the Law of Independent assortment by giving an example of each. (Think & Search)

4. Why would a large number of offspring in a cross be more likely to match Punnett-square ratios than a small number would? (On Your own)

5. In garden peas, the allele for yellow pease is dominant to the allele for green peas. Suppose you have a plant that produces yellow peas, but you don't know whether it is homozygous dominant or heterozygous. What experiment could you do to find out? Draw a punnett square to help you. (On Your Own)

4. Labs to be handed in with discussion questions written out and answered in complete sentences:

Probability Lab Problem solving Lab 10.2

5. Assigned genetics worksheets

6. Record all material presented in class notes and commit them to memory.

Extra Credit: To be passed in before the test is taken. Only students that have completed all of their homework for the two chapters on the test will be eligible. (maximum 3 pts on test)

Activity 1: Make a punnett square for a trihibrid cross between two South American Goblins with the following three traits:

B = black hair	H= horns	N= normal height
b = white hair	h = no horns	n = dwarf

Determine the phenotype ratio that would result in this cross. Show work

Activity 2: Do the online review test which you can access at by clicking the link below.

http://www.msad54.org/sahs/science/team1/Bio2/WebTest/gene1rev.htm

When you complete the test, your results will be sent to me and you will be told which you got wrong. You can only take the test once for extra credit. If you get 80 or better on the test you will get 2 pts on your first genetics test.