Question

How do Mendel’s experiments show that traits may be dominant or recessive?​

Answer 1

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How do Mendel’s experiments show that traits may be dominant or recessive?

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According to law of dominance, an attribute is painted by 2 contrastive factors of a factor during a heterozygous individual; the allele/factor that may specific itself in heterozygous individual is named as dominant trait. The opposite issue whose impact is cloaked by presence of dominant factor, is named recessive issue. Once Johann Mendel crossed one tall and one short leguminous plant, all the off springs (F1 generation) were tall. Once he self-crossed the F1 generation, among them 3/4th of the progenies were tall whereas 1/4th were short. So he ended that though the F1 relation had each tall and short traits, solely tall plants were discovered within the F1 generation, this implies that tallness may be a dominant attribute.

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Answer 2

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☃️ Mendel conducted the experiments using Pisum sativum or pea plant.

☃️ He selected homozygous tall (TT) and dwarf (tt) pea plants.

☃️ He crossed the tall pea plant with the dwarf pea plant. It was observed that the F1 generation are all tall plants.

☃️ Thus, it was concluded that the gene causing tallness is dominant while the gene causing dwarfness is recessive.

☃️ The trait expressing itself in the hybrid is the dominant one.

☃️ This experiment proves Mendel’s first law of inheritance.

☃️ It states that when a pair of contrasting factors is brought in a hybrid, one factor inhibits the appearance of the other, one which inhibits is the dominant one and which is inhibited is recessive.