Hereditary Vs Environment

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Hereditary Vs Environment

• The Debate Continues

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General Information

• Inherited characteristics carried by genes
• 200,000 trillion
• Genes are carried on chromosomes
• 23 pair
• 22pair of autosomes
• 1 pair sex-linked

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Genetics continued

• Hereditary creates likeness
• Not sameness
• Ex. Fraternal twins
• Brother sister
• Potential determined by hereditary
• Environment impacts how close we get
• Meet / exceed/ underachieve

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Genetic Terms

• Genes are dominant or recessive
• Rule --- Exception
• Eye color
• Control many factors
• Eye shape/ color
• Ear lobes
• nose shape
• Hair color, thickness

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• Lip thickness
• Widows peak
• Tasters vs. non-tasters
• New Born is something new/ unique
• Eye color example

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Example

• DAD MOM
• Bb Bb
• Possibilities
• BB Brown (pure) Homozygous Dominant
• Bb Brown( mixed) Heterozygous
• bB Brown (mixed0 Heterozygous
• bb Blue (pure) Homozygous Recessive

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Eye Color

• Phenotype
• Chance for brown eyes 31
• What we see
• Genotype
• What is genetically present
• 121
• Green / Hazel eyes

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Eye Color

• One blue/ one brown
• Sporadic mutation
• Identical twins
• Other species

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Birth Rates

• 106 males to 100 females
• Age 20 equal
• Age 50 100 Woman to 85 men
• Age 85 Five woman to one man
• Male ( XY) Female (XX)
• Options 50/ 50
• Sex Linked Traits

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Sex Linked Traits

• Color Blindness
• Baldness
• Hemophilia

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Old Wives Tales

• Control or influence sex of the baby
• Month conceived/ born
• Eat sugar
• Conception after menstration
• Eat lots of meat

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Factors Affecting the Fetus

• Maternal Nutrition
• Maternal Infection
• Drugs
• Legal/ Prescribed
• Illegal
• RH Factor
• Prematurity

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Prematurity

• Smoking
• Alcohol Fetal Alcohol Syndrome
• Rates
• Industrial vs. Third world
• USA 7.6 England 6.5
• Japan 10
• India 35

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Miracle of Near Perfect Birth

• Karotype
• Genetic Aberrations
• PKU
• Sporadic Mutation
• Marfans Syndrome
• Downs Syndrome

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Amniocentesis

• Pre-Natal Diagnosis
• Sonogram
• Alpha Fetal Protein
• Age 35
• Family History
• Previous pregnancy
• miscarriages
• Fertility drugs

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Chromosomal Abnormalities

• Deletion
• Translocation trisomy 21
• Ring Chromosome
• Turners Syndrome (F)
• no ovaries
• Kleinfelders XXY Super male
• Super Female XXX

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Summary

• Genes
• Familial Traits
• Near perfect birth
• Family history
• Medicines
• Diet
• Exercise