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Chapter 5 Heredity and Diseases
Elsevier items and derived items © 2009 by Saunders, an imprint of Elsevier Inc. 1 Types of Hereditary Diseases (Dominant) Polydactyly: Extra fingers or toes Achondroplasia: Defective formation of cartilage causing dwarfism. Marfan Syndrome: System cannot support functions – multisystemic – no cure. Familial Hypercholesterolemia: High cholesterol, causes cardiovascular diseases.
Elsevier items and derived items © 2009 by Saunders, an imprint of Elsevier Inc. 2 Types of Hereditary Diseases (Recessive) Phenylketonuria: Mental Retardation Galactosemia: Mental Retardation from build up of galactose causing development problems in brain, liver and eyes. Sickle-cell Anemia: Deformed shape of red blood cells blocking flow of normal blood cells. Tay-Sachs: Progressive mental retardation and physical regression. Albinism: Lack of melanin (color) in skin and hair.
Elsevier items and derived items © 2009 by Saunders, an imprint of Elsevier Inc. 3 Types of Hereditary Diseases (Sex-linked) Color Blindness: Cannot distinguish reds and greens. Hemophilia: Blood-clotting disorder. Fragile X-Syndrome: Mental retardation due to breakage of the X chromosome. Familial Diseases Epilepsy Diabetes Allergies Cardiovascular diseases
Elsevier items and derived items © 2009 by Saunders, an imprint of Elsevier Inc. 4 Types of Hereditary Diseases (Abnormal Chromosome) Down Syndrome Extra Autosomal chromosome Slanted eyes Coarse tongue Short, flat nose Underdeveloped sex organs Short life expectancy Cri Du Chat Syndrome Small head, deficiency in brain tissue Weak, cat-like cry
Elsevier items and derived items © 2009 by Saunders, an imprint of Elsevier Inc. 5 Congenital Diseases Appear at birth or shortly after. Result from failure in developmental stage, not from chromosome abnormality or genetics. Factors Inadequate oxygen Drugs/Alcohol Maternal infection Malnutrition Radiation
Genetics and Life Span. 23 Chromosomes Each parent provides a gene, different genes from each parent are called alleles (a-leels) Some alleles are Dominant.
Genetic Disorders. 5 Categories Autosomal Dominant Autosomal Recessive Sex-Linked Chromosomal Co-Dominant.
Human Diseases A Systemic Approach Sixth Edition
Gene A unit of heredity that controls the development of one trait
NOTES 24 – Genetic Disorders and Hereditary Diseases
Mulvihill, Zelman, Holdaway, Tompary, and Raymond Human Diseases: A Systemic Approach, 6e Copyright ©2006 by Prentice-Hall, Inc. Upper Saddle River, New.
GENETIC DISORDERS & DISEASES. Types? Dominant Recessive Sex Linked Chromosomal Mutagens?
Genetic Disorders and Birth Defects. Cleft lip/pallet Affects: anyone, more common in asians and native americans When appears: birth Method of inheritance:
Chapter 11, Complex Genetic Patterns
Chapter 12. Humans have 46 chromosomes 44 are autosomes 22 pairs of homologous chromosomes 2 are sex chromosomes: X and Y Females have two X.
Wake-up 1.A woman carrying hemophilia marries a man who is a hemophiliac. What percentage of their children will have hemophilia? 1.Cross a man heterozygous.
The Human Genome Karyotype Mapped out picture of chromosomes arranged in their homologous pairs. 46 chromosomes in human genome 23 pairs on karyotype.
Autosomal Recessive Conditions 2. Phenylketonuria (PKU) lack an enzyme to process phenylalanine amino acid build up of PHE in urine and blood causes mental.
Human Genetic Mutations
Human Genetics Chapter 12.
Human Genetics: Patterns of Inheritance for Human Traits.
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