- Question Answer
- We cannot pass on to our progeny the experiences and qualifications earned during our life time. Justify the statement giving reason and exampl
. We cannot pass on to our progeny the experiences and qualifications earned during our life time. Justify the statement giving reason and exampl
Ans. All traits of the parent cannot be transmitted to the offspring because all traits are not inherited traits, some of the characteristics are acquired. The experiences and qualifications earned during our lifetime are examples of acquired traits. A trait of an organism which is 'not inherited' but develops in response to the environment is called an acquired trait. The acquired traits of organisms cannot be passed on to their future generations. Only those traits can be transmitted to future generations in which changes have occurred in the genes present in the reproductive cells of parent organisms.
For example, If we breed some mice, all the progeny of mice will have tails, just like parents. Now, if we cut the tails of these first generation mice surgically and breed them, we will get new mice, all with full tails. Despite the cutting of tails of mice for a number of generations, a tailless mouse is never born. This is because the cut tail of mice is an acquired trait which is never passed on to their progeny. This is because cutting the tails of mice does not change the genes of their reproductive cells.