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22 Biology -- Introduction to Biology

Why is biology known as the 'Science of exception'?

Why is biology known as the 'Science of exception'?

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Biology is known as science of exceptions because of some exceptional cases, some of which are as follows:

>RBC lack nucleus in mammals except in camel and Llama.

>the heart of reptile is 3 chambered but crocodile has 4 chambered heart.

>all mammals are viviporous but duck-billed platypus and spiny ant eaters are oviparous. They are called monotremes

>DNA is the genetic materials in all living organisms but in some viruses like rhino virus, polio virus, HIV etc the genetic material in RNA

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What is transverse binary fission ? Describe it's process in paramecium. 

Transverse binary fission is a method of asexual reproduction in certain organisms, including the single-celled protozoan Paramecium. In this process, the parent cell divides transversely into two daughter cells, each of which is genetically identical to the parent cell. Here's a description of the process in Paramecium:

1. Preparatory Stage: Before transverse binary fission, the Paramecium cell undergoes a period of growth and metabolic activity. It feeds on bacteria and other small organisms...

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