Question

Out of every three individuals of an extinct animal, two of the three carried a defective gene. How many animals carried the normal gene in a population of 300?

Answer 1

100 of the population carried the normal gene.

Answer 2

It is given that out of three individuals of an extinct animal two of which carries defective gene which can be represented as
`(2)/(3)`.

Number of animals which carried normal gene

`1 -(2)/(3)\\\\=(1)/(3)`

If total number of population of animal=300,then

Number of animals which carried normal gene

`=(1)/(3)* 300=100`

=100 animals