Gregor Mendel conducted hybridisation experiments in garden pea for seven years and proposed the law of inheritance.
Why was he successful in his hybridisation experiments? Give two reasons.
State the law of independent assortment as proposed by Mendel after his dihybrid crosses.
Why was he successful in his hybridisation experiments? Give two reasons.
State the law of independent assortment as proposed by Mendel after his dihybrid crosses.
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Solution and Explanation
Step 1: Mendel’s success can be attributed to:
- Selection of true-breeding pea plants with distinct, contrasting traits.
- Quantitative analysis and statistical interpretation of data over a large number of crosses.
Step 2: The law of independent assortment states that: “When two pairs of traits are combined in a hybrid, segregation of one pair of characters is independent of the other pair of characters.”
Step 3: It means that alleles of different genes are assorted independently during gamete formation, leading to new combinations in the offspring.
Top Questions on Principles of Inheritance and Variation
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