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Schematic diagram of bacterial lactose operon
Gene Action – Operon Hypothesis

This tutorial focuses on the way genes control and determine every aspect of the body. It describes lac operon as an exa..

Wart-like leaf galls on grape leaves
Plant Cell Defense

Plants protect themselves by releasing hydrogen peroxide to fight against fungal invasion. Another way is by secreting c..

Ploidy
Mutation Frequency and Polyploidy

Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howev..

Darwin's Finches - Natural Selection
Darwin’s Finches & Natural Selection

Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..

Structural depiction of catalase, an enzyme
Protein Activity and Cellular Metabolism

Proteins have a crucial role in various biological activities. Get to know how proteins are able to perform as enzymes, ..

temperature - abiotic factor
Abiotic and Biotic Factors

This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..