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LAW OF SEGREGATION The observation that the two alleles in an individual can separate, with half of the progeny inheriting one allele and half of the progeny inheriting the other allele, is known as Mendel's law of segregation. It helps explain why progeny do not always resemble their parents. For example, two round pea plants with the genotype Rr can be crossed to produce a wrinkled pea plant. The two alleles, R and r, do not mix or change each other even though they are present in the same individual. Each allele can contribute to the next generation. Like any good hypothesis (a scientific “law“ is simply a hypothesis that is supported by an overwhelming amount of data), Mendel's law of segregation allows us to make predictions that can be tested by gathering more data (i.e. from additional experiments). We can also use this as an opportunity to practice using Punnett squares. For each of the following crosses, draw a Punnett square and give the predicted genotypic and phenotypic ratios among the progeny. In each case, the capital letter represents the allele for the dominant trait. #Iherb #gregorMendel #genetics #locus #DNA #genes #meiosis #homozygous #Cancer #FrancisCrick #gene #geneExpression #genotype #doubleStrandedDNA #Genetics101 #SisterChromatid #geneticInformation #genotypes #centromere #lawOfProbability #chromosome #geneticCode #breedingExperiment #GeneticsLecture #nucleicAcids #breeding #Primers #Heterozygous #PaternityTest
