Question

Explain with an example how variation took place due to inheritance?

Answer 1

in meiosis during crossing over between chromosomes

Answer 2

Inheritance is what you receive from your parents and when genetic material undergoes recombination during cell division, it leads to variations in traits.  

During sexual reproduction, crossing over takes places in meiosis in which non-sister chromatids cross over and exchange their genetic material which leads to variations in the traits of young ones.

For example, a brown hair baby born to parents with black hair.