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Science

Mendel’s laws

मेंडल के आनुवंशिकता के नियम

In Class 10 Science, this topic explains how Gregor Mendel’s experiments with pea plants revealed basic patterns of heredity. Students learn how traits are controlled by pairs of factors, now understood as alleles, and study dominance, segregation, and independent assortment. They use simple genetic crosses and Punnett squares to predict possible offspring combinations, distinguish genotype from phenotype, and connect inherited variation with the broader ideas of heredity and evolution.

Practice questions

Which plant did Mendel mainly use for his experiments?EasyLevel 19Why was the idea of blending of traits not supported by Mendel's experiments?MediumLevel 19Which plant did Mendel use for his experiments?EasyLevel 20If a tall pea plant is crossed with a dwarf pea plant and all first-generation plants are tall, which trait is dominant?EasyLevel 20In a monohybrid cross, what is the usual trait ratio in the second generation?EasyLevel 20What is the meaning of a dominant trait?EasyLevel 20Which scientist is famous for explaining the laws of heredity?EasyLevel 21Which plant did Mendel mainly use in his experiments?EasyLevel 21What is the usual phenotypic ratio in the second generation of Mendel’s monohybrid cross?EasyLevel 21Tall and dwarf forms in pea plants are examples of what kind of traits?EasyLevel 21Why was the pea plant suitable for Mendel's experiments?MediumLevel 19What does independent assortment mean in a Mendelian cross involving two traits?MediumLevel 19How did Mendel's experiments challenge the idea of blending of traits?MediumLevel 19If a tall pea plant is crossed with a dwarf pea plant and all plants in the first generation are tall what can be concluded?MediumLevel 20In Mendel's monohybrid cross the recessive trait reappears in the second generation. What is the correct reason?MediumLevel 20Why did Mendel consider the pea plant suitable for experiments?MediumLevel 20Only one form of a trait appears in the first generation out of two forms. This points to which idea?MediumLevel 21If two traits are studied together what type of Mendel's experiment is it?EasyLevel 21What main idea did Mendel understand from a dihybrid cross?MediumLevel 21If only the dominant trait appears in Mendel's first generation, what is the correct conclusion about the recessive trait?MediumLevel 19