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APBIO- Chpt 14C “Genetics & Pedigrees” Supplement

APBIO- Chpt 14C “Genetics & Pedigrees” Supplement. Warm-Up : Describe the importance of pedigrees in the study of genetics. OBJECTIVES. (1) The student will be able to describe how to create and interpret a pedigree.

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APBIO- Chpt 14C “Genetics & Pedigrees” Supplement

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  1. APBIO- Chpt 14C “Genetics &Pedigrees” Supplement Warm-Up: Describe the importance of pedigrees in the study of genetics.

  2. OBJECTIVES • (1) The student will be able to describe how to create and interpret a pedigree. • (2) The student will be able to identify and describe several methods for mapping human chromosomes.

  3. KEY CONCEPT: A combination of methods is used to study human genetics.

  4. Human Genetics & Pedigrees • A pedigree is a chart for tracing genes in a family. • Phenotypes are used to infer genotypes on a pedigree. • Autosomal genes show different patterns on a pedigree than sex-linked genes.

  5. Human Genetics & Pedigrees • If the phenotype is more common in males, the gene is likely sex-linked.

  6. REFLECTION • (1) Describe how to create and interpret a pedigree.

  7. Human Genetics & Pedigrees • Several methods help map human chromosomes. • A karyotype is a picture of all chromosomes in a cell.

  8. Human Genetics & Pedigrees • Karyotypes can show changes in chromosomes. • deletion of part of a chromosome or loss of a chromosome • large changes in chromosomes • extra chromosomes or duplication of part of a chromosome

  9. REFLECTION • (2) Identify and describe several methods for mapping human chromosomes.

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