191104Monohybrid

191104Monohybrid - Genetics Thestudyofinherited...

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Genetics The study of inherited  characteristics
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Monohybrid inheritance Let the allele for  round  seeds be:  (dominant allele) Let the allele for  wrinkled  seeds be:   (recessive allele) Parents phenotype            round  seeds    x    wrinkled  seeds genotype RR      rr Gametes F1 generation R R r r F1 phenotypes 100%  plants producing  round  seeds F1 genotypes 100%  heterozygotes   Rr gametes R R r Rr Rr r Rr Rr gametes
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F1 intercross Parents  phenotype         round  seeds x  round  seeds         genotype             Rr                    Rr Gametes F2 generation R r r R Phenotype 75%  plants producing  round  seeds 25% plants producing  wrinkled  seeds Genotype 25%   RR        50%   Rr       25%  rr Ratio 3:1 Round  seeds:  wrinkled  seeds gametes gametes R r R RR Rr r Rr rr
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Does the observed ratio match the theoretical ratio? The theoretical or expected ratio of plants producing round or 
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191104Monohybrid - Genetics Thestudyofinherited...

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