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
In Mendel's monohybrid cross, all first-generation plants appeared tall. What is the most correct conclusion?HardLevel 20Why did the dwarf trait not appear in the first generation of Mendel’s pure tall and pure dwarf cross?HardLevel 20What does the law of independent assortment show in a dihybrid cross?HardLevel 21Why was the use of pure-breeding lines important in Mendel's pea experiments?MediumLevel 19In Mendel's monohybrid cross, the 3:1 result in the second generation points to which basic principle?MediumLevel 19In Mendel's monohybrid cross, the three-to-one result in the second generation most strongly supports which principle?MediumLevel 20If two traits do not always move together and new combinations appear in offspring, this is related to which law?MediumLevel 20How is the idea that trait information exists in two copies made clear by Mendel's experiments?MediumLevel 20