NCERT Solutions for Class 10 Science Chapter 9: Heredity and Evolution

NCERT Solutions for Class 10 Science Chapter 9: Heredity and Evolution Heredity and Evolution NCERT Solutions for Class 10 Science • Chapter 9 NCERT Questions Question 1. How do Mendel's experiments show that the traits may be dominant or recessive? Show Answer Answer: Mendel's Experiments: Monohybrid Inheritance (One Visible Contrasting Character): Mendel first took pea plants with different characteristics such as a pure bred tall plant and a dwarf plant and crossed them. He found that only tall pea plants were produced in the \( F_1 \) progeny. Then he allowed the \( F_1 \), tall plants to reproduce by self-pollination, and found that the \( F_2 \) progeny of the \( F_1 \) tall plants were not all tall. Both tall and dwarf plants were obtained in the ratio of 3 :1. This ratio is known as the monohybrid ratio. This indicated that both tallness and shortness traits were inherited in \( F_1 \) generation but only tallness trait was expres…