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| Genetic makeup of the organism |
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| Powerful theory (Aristotle); retarded medicine and biology 2 millenia |
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| Geneticist proved GENES are located on chromosomes |
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| Little man in SPERM cell; associated with PREFORMATION theory |
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| Promoted Theory of Acquired Characteristics (use and disuse of organs) |
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| Environment = Natural selector of most adapted phenotypes. |
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| "Father of Genetics"; performed monohybrid crosses of garden peas |
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| Mendel's great contribution; genes inherited as distinct units -unchanged |
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| Classic F2 phenotype ratio from a DIHYBRID cross (TtPp x TtPp) |
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| Phenotype ratio from the cross: Pp x pp |
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| Classic F2 phenotype ratio from a DIHYBRID cross (TtPp x TtPp) |
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| German biologist; disproved Lamarck's theory of Acquired Characteristics |
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| Pp x pp (cross determine genotype of a DOMINANT phenotype) |
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| Occurs at METAPHASE I; homologous chromosomes align OPPOSITE |
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| Chemicals from each organ blend together at FERTILIZATION |
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| Physical/physiological VISIBLE result from a given GENOTYPE |
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| This allele will be expressed in the PHENOTYPE. |
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| Gene variant that is NOT expressed when associated w/ dominant allele |
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| Formula for calculating # of GAMETE types knowing # of HYBRIDS |
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| A trait's phenotype expresses itself in BROAD continuum (eg. Height) |
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| Trait is expressed either DOMINANT or RECESSIVE phenotype. |
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| Trait with TWO alleles operating in Dominant/Recessive relationship. |
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| Based upon Anaphase I of Meiosis; homologous chromosomes separate |
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| TtPp x TtPp (no linkage of genes) |
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| Tt x Tt (cross of two single hybrids for same trait). Mendel's main one |
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| SPERM from one plant joins EGG from another plant |
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| Diagram shows all possible outcomes from a genetic cross |
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| Heterozygotes; phenotype intermediate between two homozygote phen. |
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Definition
| Genotype with DIFFERENT alleles for a given gene (eg. Tt of Pp) |
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Definition
| Genotype with SAME alleles for a given gene (eg. TT or tt) |
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