Altered Cellular Tissue. Heredity DNA –Chromatin –Chromosome –Karyotype Protein Synthesis –Transcription –Translation.

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Presentation transcript:

Altered Cellular Tissue

Heredity DNA –Chromatin –Chromosome –Karyotype Protein Synthesis –Transcription –Translation

DNA Replication

Karyotype/Chromosomes

Protein Synthesis

Genetics GENES MAKE PROTEINS!!!!!!!! Gene –Autosomal –X-linked –Y-linked Inheritance –Mendelian –Non-Mendelian Chromosomal Abnormalities Polygenic Multifactorial

Mendelian Genetic Disorders Autosomal Dominant: –Presence of the protein causes disease Autosomal Recessive –Lack of the protein causes disease Sex linked –X-linked –Y-Linked

Autosomal Dominant: Huntington’s Disease

Autsomal Recessive: Cystic Fibrosis, Sickle Cell Anemia, PKU

X-linked Recessive: Hemophilia, Color Blindness

Polygenic Inheritance –Each allele produces larger amounts of the protein

Multi-Factorial: CAD Genetic –LDL receptors –Liver Function –Clotting –Inflammation Disposition –Blood Pressure Environmental –Age –Smoking –Exercise –Diet –Blood Pressure

Inheritance Genotype vs phenotype Penetrance Variable expressivity Lethal allele

Environmental Congenital Disorders Teratogens –Alcohol –Cigarettes –Medications –Radiation Infections –Toxoplasmosis –Other: hepatitis B, syphilis, herpes zoster –Rubella –Cytomegalovirus (CMV) –Herpes simplex virus

Screening and Treatment Genetic Counseling Fetal Diagnostics Newborn screening –FL: PKU, hypothyroidism, galactosemia, hemoglobinopathies Management of Phenotype Dietary Modification Replacement Surveillance Surgery Gene therapy

Worldview Issues Health/Disease Genetic diseases