Get Answers to all your Questions

header-bg qa

According to Darwinain theroy of natural selection the rate of apperance of new forms are linked to the life-cycle or the life  span of an organism. Explain with the help of an example.

 

 

 

 
 
 
 
 

Answers (1)

The rate of appearance of new forms is linked to the life-cycle or the life span. Microbes that divide fast have the ability to multiply and become millions of individuals within hours.

Example;

A colony of bacteria (A) growing on a given medium has built-in variation in terms of the ability to utilize a feed component. A change in the medium composition would bring out only that part of the population (B) that and survive under the new conditions. In due course of time, this variant population outgrows the others and appears as new species and this would happen within days. We can say that the fitness of B is better than that of A under the new conditions.

NAture selects fo fitness and fitness is the end result of the ability to adapt and get selected by nature.

Posted by

Priyanka Kumari

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads