You will also like...
This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
Plants produce hormones to regulate their growth. Auxins, for instance, influence plant growth. Know the role of auxin i..
With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..