The germ cells The hereditary material is pass it on to posterity. Men and women in the reproductive cells produce respectively the testes and ovaries. In these bodies are haploid germ cells produced. This means that each of the chromosomes of only one instance is present, so there are no homologous chromosomes. The other body [...]

Employment contract A contract is an agreement between employer and employee, the employee is employed by the employer obliged to pay to work. Once an employer takes a new employee, there is an agreement. Usually this is documented, it is not required, the employer is obliged to give the employee written information on industrial relations. [...]

What is an ecosystem Under an ecosystem includes all the viable and non-living parts in an area, which have a certain relationship to each other. Types of Two animals belong to the same kind of like them together can produce fertile offspring. This means that the offspring can produce your own offspring. By two types [...]

How to tell your blood luis at a chicken? Blood on the sticks in size. In the warm period of the summer is coming the blood lice the most common. Even if you regularly clean the chicken pens, it can still happen, that the blood luis “toehapt.” If the chicken continuously with the beak in [...]

What is cloning? Cloning is to create a genetically identical copy of an individual. Cloning is not new in itself. Who are identical twins are natural human cloning. Typically, the children of the same parents a different look. They are the same as in the fact that half of their genes of their father and [...]

A useful role to decipher the DNA? In addition to the huge amount of work that needs to be done, you can ask yourself if scientists have nothing better to do. In fact, it costs a great deal of time and money. People who know something of genetics, are familiar with the fact that of [...]

Pheromones Pheromones are chemicals that serve as a means of communication between individuals of the same suit. Although these substances in humans are present, they work in animals from strength to strength. By vomeronasale organ (VNO/vomeronasal) where animals pheromones. This detection system for pheromones is separate from the more developed nose, which later in the [...]

Theories There are quite a lot of theories of evolution, we are dealing with a few here. Creationism When are you going to creationism that the world is created by an supreme power. Also, it is from this species does not change. Lamarckism Jean de Lamarck claimed that the species that are now on the [...]

Enzymes bind themselves to the substrate (so called to convert the substance or substances). By that binding small changes to the substrate molecules, making them easier to respond (split or parts). The enzyme is then again just usable. That is why it is also important to the protein form that you do not change. When [...]

Darwin Charles Darwin in 1831, along with the 30-metre-long three-master with the Beagle. He had no real function, but was mostly company has given its support to the master, who prefer to be with a civilized man wanted to talk with the sailors. For the trip was already stopped Darwin with his study medicine, he [...]