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Homework Read about and describe the following Genetic Disorders (p. 312 & 314): Cystic fibrosis Tay-Sachs Disease PKU Huntington’s Disease

Pedigree

Answer the following questions using the pedigree above: 1.How many generations are shown? 2.Name the individuals that have the trait. 3.How many children do Individuals I-1 and I-2 have? What sex is the youngest child? 4.How is individual III-3 related to Individual I-2? 5.How are individuals III-6 and III-1 related? 6.A trait is carried on an allele. Do you think this trait was carried on a recessive allele or a dominant allele? Explain.

Answer the following questions using the pedigree above: 1. How many generations are shown? 2. Name the individuals that have the trait. 3. How many children do Individuals I-1 and I-2 have? What sex is the youngest child? 4. How is individual III-3 related to Individual II-6? 5, A trait is carried on an allele. Do you think this trait was carried on a recessive allele or a dominant allele? Explain.

Bell Ringer – 1/6/2009 Construct a family pedigree using the following information: Jack and Jill had 5 children. The oldest child was the only boy. The youngest child had Cystic Fibrosis and died at a very young age. Both Jack and Jill are known carriers of the disorder.

Bell Ringer – 1/7/2009 The Pedigree to the left shows Simple Recessive Heredity. Using the genotypes: TT, Tt, or tt, find the genotypes of the following individuals: a) II-2 b) I-2

TEST on Monday!!! You will have a test on Monday on the following topics in Chapters 10 &12: Section 10.1 – p. 252 – 262 “Mendel’s Laws of Heredity” “Monohybrid Crosses” “DiHybrid Crosses” Section 10.2 – p. 263 – 273 “Meiosis” Section 12.1 – p. 309 – 314 “Pedigree”

Bell Ringer -1/8/2009 Name the 4 phases of Mitosis Prophase _________ Metaphase _________ Anaphase ________ Telophase ________

Bell Ringer – 1/9/2009 1)A cell’s diploid number (2n) is 100. What is the cell’s haploid (n) number? 2) A cell has 50 chromosomes, after mitosis, how many chromosomes do each of its daughter cells have?