Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..
It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its 'mi..
Plants produce hormones to regulate their growth. Auxins, for instance, influence plant growth. Know the role of auxin i..
Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..
This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..
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