Biographies

Gregor Mendel and the laws of inheritance

Gregor Mendel and the laws of inheritance

Gregor Mendel was an Austrian biologist who was born on July 20, 1822. Born in Heinzendorf, belonging to the current Czech Republic, under the name of Johann Mendel, he acquired the name of Gregor in honor of Father Gregorio upon entering as a Catholic Augustinian monk in the year 1843.

His work conducting experiments with the crossbreeding of peas, led him to develop the three laws of inheritance, better known as Mendel's Laws in 1865.

Thanks to these it is possible to describe the mechanisms involved in inheritance and which were used as a basis by Thomas Hunt Morgan, father of modern experimental genetics.

These laws can be summarized as follows:

1st Mendel Law: Law of the uniformity of the first generation hybrid hybrids. According to this law, the cross between two purebred individuals will always result in equal hybrids. In this way, all the individuals of the first filial generation will be uniform among themselves, being able to resemble one or another parent or none of them.

2nd Mendel Law: Law on the segregation of characters in the second generation subsidiary. According to this second statement, there are certain individuals who have the ability to convey a character, even though it does not manifest itself.

3rd Mendel's Law: Law on the independence of hereditary characters. Finally, the characters found on separate chromosomes are transmitted independently, unless there is a link between them.

To make these laws, Gregor Mendel used self-breeds of the pea species Pisum Sativum. With it he managed to obtain pure lines and then cross them using an artificial pollination technique. From this experiment several conclusions were drawn, including the possibility of crossing races with two different characters to create new stable races.

Mendel died on January 6, 1884 in Brünn, due to chronic nephritis.

◄ PreviousNext ►
Charles Darwin and evolutionLouis Pasteur, father of modern microbiology