In this article we will discuss about:- 1. Meaning of Circadian Rhythm 2. Examples of Circadian Rhythm 3. Diagnostic Features 4. Mechanism. Meaning of Circadian Rhythm: Circadian rhythm among all other rhythms have been widely studied. The term originated from two Latin words, circa meaning about and dian meaning a day. Circadian rhythm can be defined as an approximately 24 [...]
In this article we will discuss about:- 1. Definition of Pheromones 2. Discovery of Pheromones 3. Classification 4. Chemical Nature 5. Pheromones in Animals 6. Functions 7. Adverse Effects. Definition of Pheromones: Communication among animals is essential for their well-being. Almost all animals communicate through chemicals produced by glands within the body. Pheromone is a chemical that is produced and [...]
In this article we will discuss about the role of males and females in parental investment. Due to differences in gamete size (anisogamy), an egg (being larger) requires a greater investment of energy than does a sperm and are likely to be limited in number. This would lead to the males competing for the opportunity to fertilize them and will [...]