Question

1. Why are chromosomes called hereditary vehicles?
2. In most of the testers LEDs are being used. Why?

Answer 1

1) Chromosomes enclose with the number of the genes so it carries along with the heredity characteristic from the respective parents to the child. Hence it is called as the heredity vehicles. With the support of the genes, they transfer character of a parent to the respective offspring.

2)LEDs are used in most of the testers because LEDs can glow even if the current is too small. That is why LEDs are used as testers instead of other bulbs as they cannot glow in small currents in which an LED can glow.