1. All the plants were having seeds of mixed colour of yellow and green 
  2. More Plants were having yellow seeds q
  3. More Plants were having green seeds 
  4. More plants were having yellowish green seeds 
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Option 2 : More Plants were having yellow seeds q

Concept:

Law of inheritance:

  • Gregor Mendel conducted hybridisation experiments on garden peas for seven years and proposed the laws of inheritance in living organisms.
  •  He selected 14 true-breeding pea plant varieties, as pairs which were similar except for one character with contrasting traits.
  • Based on these observations, Mendel proposed that something was being stably passed down, unchanged, from parent to offspring through the gametes, over successive generations. 

Explanation:

Experiments of the law of inheritance with yellow and green seeds:

  • Mendel investigated characters in the garden pea plant that were manifested as two opposing traits, e.g., tall or dwarf Plants, and yellow or green seeds.
  • In the law of inheritance, Mendel denotes yellow colour seed is a dominant trait and the green colour seed is a recessive trait.
  • He collected the seeds produced as a result of this cross and grew them to generate plants of the first hybrid generation or the F1.
  • He notices all the F1 generation plant seeds are yellow like one of its parents.
  • Mendel then self-pollinated the yellow F1 plant's seeds and to his surprise found that in the Filial2 generation some of the offspring were ‘green’.
  • At the F2 stage, both the traits were expressed in the proportion of 3:1.
  • For the yellow dominant trait, he uses YY and for the recessive green trait, he uses yy.

Thus, phenotypically more Plants were having yellow seeds.

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