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Name:___________________________ Date: ____________Period:_____ Agenda Week of 21 Jan – 25 Jan 2008 Unit 4 Genetics-Heredity Exam 2/5/08 Class website: www.marric.us/teaching Monday 1/21/08 Martin Luther King Jr. Holiday HW: Overview vocabulary /SG due 2/5/08 SG check on Th/Fr Tuesday 1/22/08 (LEAP 2:30-3:30) - Unit 4 Quiz 2 - Chapter 11 – Human Genetics Sci Notebook (due 1/25) or Study Guide HW: Overview vocabulary /SG due 2/5/08 Wednesday 1/23/08 –Late Start - Sex-linked Genetic Problems #6 (HW) HW: Overview vocabulary /SG due 2/5/08 Thursday 1/24/08 – Block Day - Study Guide - check - Dihybrid Crosses Problems #7 - Pedigrees HW: Overview vocabulary /SG due 2/5/08 study for Unit4 Quiz 3 Friday 1/25/08 – Block Day - Study Guide 1-50 - check - Dihybrid Crosses Problems #7 - Pedigrees HW: Overview vocabulary /SG due 2/5/08 study for Unit4 Quiz 3

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I have reviewed my child’s activities and

homework for the week of 1/21/08 – 1/25/08. I understand that is important for me to make sure that my child is studying to be prepared for the Quiz on 1/29/08 and has completed all assignments this week. I understand if my child needs to retake a quiz that the original quiz with corrected answers, signed by a parent, must be turned in when the quiz is retaken on Tuesdays either at lunch or after school.

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Unit 4 Quiz 3 Jan 29 All work must be shown on Quiz 1. A man with a certain syndrome marries a woman who is normal for that trait. They have 6 children, three girls and three boys. All of the girls have the same syndrome as the father whereas none of the boys is affected. Which type of heredity is not possible here? 2. Given that the dominance hierarchy of rabbit fur color alleles is C > Cch > Ch, from grey to chinchilla to Himalayan, respectively, what would be the percentage of Himalayan colored rabbits from parents with C C h and Cch Ch?

3. A cross between a white rooster and a black hen results in 100% blue Andalusian offspring. When two of these blue offspring are mated, the probable phenotypic ratio seen in their offspring would be _________________________________________. 4. A true-breeding tall pea plant is crossed with a truebreeding short pea plant, and all the offspring are tall. What is the most likely genotype of the offspring assuming a single-gene trait? 5. In mice, black is dominant to white color and color is determined by a single gene. Two black mice are crossed. They produce 2 black offspring and one white offspring. If the white offspring is crossed with one of its parents, what percent of the offspring are expected to be white?

Vocabulary words: Homologous Hybrid Probability Autosomal Incomplete dominance

Signature

Meiosis Mitosis Sex-linked Co-dominance Zygote

Date

Bell Ringers: Week of 21 Jan – 25 Jan 2008 Monday – A pea plant homozygous for the trait of smooth seeds is crossed with a pea plant that is homozygous for the trait of wrinkled seeds. The first generation produces seeds that are all smooth. What percent of the second-generation plants will have smooth seeds when the F1 generation is selffertilized?

Tuesday If two heterozygous individuals are crossed, what percent of their offspring are also expected to be heterozygous? Explain.

Wednesday – In which situation are the phenotypes of F2 offspring expected to follow the ratio of 9:3:3:1. a. a monohybrid cross for 2 unlinked traits b. a monohybrid cross for 2 closely linked traits c. a dihybrid cross for 2 unlinked traits d. a dihybrid cross for 2 closely linked traits Explain.

Thursday/Friday Nondisjunction is related to a number of serious human disorders. How does nondisjunction cause these disorders? a. alters the number of gametes produced b. alters the number of zygotes produced c. alters the chromosome structure d. alters the chromosome number Explain.

What occurs during the process of meiosis in humans that can lead to a child with the condition of Down syndrome? a. production of a duplicate chromosome set b. production of gametes which are diploid c. production of gametes with one duplicate chromosome d. production of gametes with one duplicate sex chromosome Explain.

Name:_______________________________ Date:____________________ Period:______ Unit 4 Quiz 3 Jan 29 All work must be shown on Quiz 1. A man with a certain syndrome marries a woman who is normal for that trait. They have 6 children, three girls and three boys. All of the girls have the same syndrome as the father whereas none of the boys is affected. Which type of heredity is not possible here? 2. Given that the dominance hierarchy of rabbit fur color alleles is C > Cch > Ch, from grey to chinchilla to Himalayan, respectively, what would be the percentage of Himalayan colored rabbits from parents with C Ch and Cch Ch?

3. A cross between a white rooster and a black hen results in 100% blue Andalusian offspring. When two of these blue offspring are mated, the probable phenotypic ratio seen in their offspring would be:

4. A true-breeding tall pea plant is crossed with a true-breeding short pea plant, and all the offspring are tall. What is the most likely genotype of the offspring assuming a single-gene trait?

5. In mice, black is dominant to white color and color is determined by a single gene. Two black mice are crossed. They produce 2 black offspring and one white offspring. If the white offspring is crossed with one of its parents, what percent of the offspring are expected to be white?

6. Nondisjunction is related to a number of serious human disorders. How does nondisjunction cause these disorders? a. alters the number of gametes produced b. alters the chromosome number c. alters the chromosome structure d. alters the number of zygotes produced

Vocabulary words Matching (11 – 20): _____ Zygote

A. A type of cell division that produces identical cells

_____ Homologous

B. the likelihood of an occurrence

_____ Hybrid

C. having to do with a body cell chromosome

_____ Meiosis

D. The situation in which a heterozygote shows the phenotypic effects of both alleles fully and equally

_____ Mitosis

E. having to do with a sex chromosome

_____ Probability

F. A type of cell division that produces sex cells

_____ Sex-linked

G. Chromosomes with the information to code for the same trait

_____ Autosomal

H. Heterozygous

_____ Co-dominance

I. A fertilized egg

_____Incomplete dominance

J. both alleles of a heterozygote influence the phenotype. The phenotype is usually intermediate between the two homozygous phenotypes.

Extra Credit