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1. Explain how Mendels thinking shows both a gradual progression from prior ideas regarding heredity and also a break from those prior ideas.
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1. Gregor Mendel conducted study on Pisum and by self fertilization crosses, Mendel indicated that plants possess a single factor for certain charecteristics. Various varities of the plant were tested in order to estimate purity. This approch indicated the gradual progress in the ideas. Later, Gregor mendel conducted strategic crosses among the plants to find out the number of progeny resulted. This attempt was a different approach from Mendel compared to previous researchers.

2. Mendel allowed the fertilization of F2 plants. Al the the progeny resulted from the F2 recessive parents indicated reccessive traits. But, in case of parents with dominant trait, produced hybrids (two-third of the individuals) and true breeding (one third). He allowed the self fertilization of dominant F2 varities and observed the traits in F3 generation. Here, Mendel repeated the experiments and attained the results that is convincing for him. This indicates that data is interpreted on te basis of other set of data and dominant ideas.

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