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Mrs. Albrecht Weekly Homework Sheet
March 2 to March 6, 2015
Date
3/2 Activity 62: Analyzing Genetic Data
Science Homework
Answer the following questions:
1. What were the genotype & phenotype of the parent plants of your seedlings?
2. Construct a Punnett square to show what will happen if one of the green parent-­‐generation Nicotiana plants is crossed with a pale yellow plant. Explain the results. 3. Complete a conclusion and define all vocabulary for Act 62
3/3 Activity 65: Breeding Critters – More Traits
Answer the following questions:
1. Which characteristics show a simple dominant/recessive pattern like tail color? List them in a table and indicate which version is dominant and which is recessive for each trait.
2. For which characteristic do some offspring have traits in between Skye’s and Poppy’s traits? Explain. (For example, in some plants, a cross between a red and white flowered plant will give pink flowered offspring. This is called incomplete dominance.) 3. For characteristic do some offspring have both Skye’s and Poppy’s traits? Explain (For example a person with blood type A and a person with blood type B can have a child with blood type AB. This is called co-­‐dominance.)
4. Complete a conclusion and define all vocabulary for Act 65
3/4 Activity 66: Patterns in Pedigrees
Answer the following questions:
The term carrier is used very differently in genetics than in the study of diseases.
a) What is being “carried” by a genetic carrier? What is being “carried” by a disease carrier?
b) How does transmission occur for genetic conditions? How does transmission occur for infectious diseases?
3/5 Activity 66: Patterns in Pedigrees
Complete Analysis questions 1-­‐4 in class.
Complete a conclusion and define all vocabulary for Act 66
3/6 Mini-­‐Quiz over Act. 61 -­‐ 67
Activity 67: What Would You Do?
Answer the following questions:
1. Given Joe’s family pedigree, how would a genetic counselor answer the following questions?
a.)If Joe has the Marfan syndrome, is he likely to be homozygous or heterozygous? Explain your answer.
b.)If Joe has the Marfan syndrome & has a child someday, what is the possibility that his child will have Marfan syndrome? Assume the mother does not have Marfan syndrome. Make a Punnett square & explain your answer.
2. Pretend you are Joe’s friend. Write a letter to Joe telling him whether you think he should be tested.
3. Complete a conclusion and define all vocabulary for Act 67