Biology

What is heredity?

Can a blue-eyed baby be born into a family of brown-eyed parents? In order not to guess from the coffee grounds, it is enough to study in more detail the features of genetic heredity. What is heredity...

Brood birds: features of development and life activity

Which are based on a variety of characteristics. One of them is the degree of development of newborn chicks and the characteristics of their further growth. Based on this systematization criterion, two...

Legless amphibians: representatives (photo)

Legless amphibians: representatives (photo) September 3, 2015 The diversity of the fauna of our planet is very great. Among its representatives there are also such interesting species of amphibians as legless amphibians....

2.2. Phanerozoic. Fauna of the Cambrian period. Cambrian explosion

2.2. Phanerozoic. Fauna of the Cambrian period. Cambrian Explosion The Cambrian period began approximately 570 million years ago, perhaps slightly earlier, and lasted 70 million years. The beginning of this...

Cambrian period

From 570 to 500 million years ago. The Cambrian period began approximately 570 million years ago, perhaps slightly earlier, and lasted 70 million years. This period began with an astonishing evolutionary force...

Kingdoms of living organisms

Over the entire history of human existence, a lot of knowledge has accumulated about the diversity of living nature. With the help of the science of taxonomy, all living nature is divided into kingdoms. In this article we will tell you...

Lesson 26.1. Class Amphibians. Troops: Legless

Type of lesson - combined Methods: partially search, problem-based presentation, reproductive, explanatory-illustrative. Goal: mastering the ability to apply biological knowledge in...

Order legless amphibians (caecilians)

Among the animals called amphibians or otherwise amphibians, a special place is occupied by the order of legless amphibians (caecilians). And it is about them, about legless amphibians, that we will discuss in this article. So,...

Caecilians - a group of legless amphibians

On our planet, among the diverse amphibians, there is an interesting type of amphibian - caecilians. This legless squad is the smallest among other representatives of amphibians. Features...

Interspecific animal hybrids

Interspecific hybridization of animals is not a very common phenomenon, and therefore quite interesting. Interspecific animal hybrids are usually unable to produce offspring, since the formation process is disrupted...

Sections of biology and what they study

The name of the science of biology was given in 1802 by the French scientist Lamarck. In those days, it was still beginning its development. What does modern biology study? Sections of biology and what they study. If...

Animals of the Precambrian and Cambrian period (13 photos)

Despite the fact that very little is known about those distant times, many of the amazing creatures that inhabited the Earth in that era are coming to life in the capable hands of paleontologists and biologists. No creatures...

Its essence and functions in the cell

A living cell is an integral biological system, all parts of which must work together to ensure normal functioning and life as a whole. One of the characteristics that directly affects...

Signs and characteristics of all kingdoms of living nature

Traditionally, all living organisms are divided into three domains (superkingdoms) and six kingdoms, but some sources may indicate a different classification system. Organisms are placed in...

Cambrian period, or Cambrian (542-485 million years ago)

Before the start of the Cambrian period, 542 million years ago, life on Earth consisted mainly of single-celled bacteria and algae, but after the Cambrian, multicellular and...