Heterozygous different alleles for a trait mendels

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Heterozygous : Different alleles for a trait. Mendel’s Experiments Phenotype observable traits Genotype traits present in genes
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8/7/2017 4 Mendel’s Experiments Homozygous 2 identical alleles (TT, tt) Heterozygous 2 different alleles (Tt) Circadian rhythm (Sleep/Active cycle) in mice/hamsters One gene determines when they sleep and when they’re active. Could this be true for human beings? What else might be involved? Polygenic inheritance: Many genes interact to produce a single trait or behavior Pleiotropic effects: Single gene can have many different effects
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8/7/2017 5 Any pregnancy, 3% chance of having child w/ a genetic disorder. Testing: Blood test alphafeta protein test Amniotic fluid test Amniocentesis Chorionic villus sampling (CVS) Canalization: Degree to which environment influences a gene Ex. Digestion system (i.e. corn etc.) Puberty Taste in music? Epigenetics: How genes are activated/silenced in response to environment
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8/7/2017 6 Passive gene-environment interaction (nurture) : F amily influences genetically predisposed abilities/interests. Active gene-environment interaction (nature) : Genes influences child to find experiences that fit their genes. Evocative gene-environment interaction (social): Other people’s reactions to gene influenced behaviors.
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  • Fall '19
  • Genetics, Mendel’s Experiments, Twin Studies,  Genetic,  Findings,  Fewer genes

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