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Question
Read the following and answer from given below:
Prashant wanted to find the genotype of a pea plant bearing purple coloured flowers in his kitchen garden. For this, he crossed purple-flowered plants with white-flowered plants. As a result, all plants which were produced had purple flowers only. Upon selfing these plants, 75 purple flower plants and 25 white flowers plants were produced. Now, he can determine the genotype of a purple-flowered plant by crossing it with a white-flowered plant.
Which of the following cannot be derived from the crosses done by Prashant?
Options
Mendel's law of segregation
Mendel's law of dominance
Mendel's law of independent assortment
Both Mendel's law of segregation and Mendel's law of independent assortment
Solution
Mendel's law of independent assortment
Explanation:
Mendel's law of independent assortment states 'when two pairs of traits are combined in a hybrid, segregation of one pair of characters is independent of the other pair of characters'. This law can be derived by dihybrid cross but Prashant has performed monohybrid cross only, i.e., one pair of traits.
