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Download Human Genetics Section 5-3 Mutations • Change in order of base
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Transcript
Human Genetics Section 5-3 Mutations • Change in order of base pairs (ATCG) causes a different trait. • Examples: __________________________________ Cystic fibrosis Recessive Genetic Disorders • Homozygous recessive disorder: individual has two recessive alleles (rr). • Sickle cell anemia Blood cells are ______________________________ instead of round. Clog small blood vessels. Tropical regions have ____________________________ percentages. • Sickle cell anemia and malaria. Cystic Fibrosis Mutation causes thick _______________________to build up in lungs. • Mucus causes breathing problems and lung damage. • 1 in ________ people are carriers (Rr). Sex Determination • Special chromosomes determine individual’s sex. • Two X chromosomes = _____________________ • One X, one Y = ________________________ • Females produce only X chromosomes. • Males produce both X and Y chromosomes. Sex Linked Disorders • Genes on ________________________ chromosome can cause disorders. • Examples: Color blindness __________________________ Hemophilia • Sex linked disorders are less common in females. Genetic Engineering • Change in sequence of base pairs in ___________________ • Example ATAGCGCATAGCGGGATC ATACGCCTTAGCGGGATC • Can be used to insert normal genes into cells or to make cells produce ___________________