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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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