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2.3 describe outcomes of monohybrid crosses involving simple dominance using Mendel’s explanations

describe outcomes of monohybrid crosses involving simple dominance, using Mendel’s explanations

Monohybrid crosses involve one factor only. For example, a cross might involve a true breeding (homozygous) tall plant crossed with a true breeding (homozygous) short plant. This produces a first generation where all of the plants are tall. Mendel explained the first generation trait as the dominant factor.

mendel1

Thus, Mendel was able to explain his observed ratios, i.e.:

F1 – all tall

F2 – 3 tall : 1 short