In 1953, Francis Crick and his research colleague James Watson decoded the molecular structure of deoxyribonucleic acid (DNA), i.e. the structure of the genetic material, and developed a spatial model of the double helix. This discovery is still regarded today as a revolution in molecular biology, which was also decisive for developments in genetic engineering. … Who Were Crick and Watson?
Heredity, genes, genetic fingerprint Definition DNA is the building instruction for the body of every living being (mammals, bacteria, fungi, etc.) It corresponds in its entirety to our genes and is responsible for the general characteristics of a living being, such as the number of legs and arms, as well as for individual characteristics such … Deoxyribonucleic acid – DNA
DNA bases There are 4 different bases in the DNA. These include the bases derived from pyrimidine with only one ring (cytosine and thymine) and the bases derived from purine with two rings (adenine and guanine). These bases are each linked to a sugar and a phosphate molecule and are then also called adenine nucleotide … DNA bases | Deoxyribonucleic acid – DNA
DNA Replication The goal of DNA replication is the amplification of existing DNA. During cell division, the DNA of the cell is exactly duplicated and then distributed to both daughter cells. The doubling of DNA takes place according to the so-called semi-conservative principle, which means that after the initial unravelling of the DNA, the original … DNA Replication | Deoxyribonucleic acid – DNA
DNA sequencing In DNA sequencing, biochemical methods are used to determine the sequence of nucleotides (DNA base molecule with sugar and phosphate) in a DNA molecule. The most widely used method is the Sanger chain termination method. Since DNA is composed of four different bases, four different approaches are made. Each approach contains the DNA … DNA sequencing | Deoxyribonucleic acid – DNA
Research goals Now that the human genome project has been completed, the researchers are trying to assign the individual genes to their significance for the human body. On the one hand, they are trying to draw conclusions about the development of disease and therapy, and on the other hand, by comparing human DNA with the … Research goals | Deoxyribonucleic acid – DNA
When it comes to the topic of genetic engineering in food, most consumers are very skeptical. Are we already finding GM food in the supermarket? How do I recognize genetically modified food? These are critical questions that many consumers ask themselves. Years ago, the “anti-mush tomato” triggered the first discussion about genetically modified food. Since … Genfood: in the Supermarket?
Synonym Microscopic Anatomy Definition – What is histology actually? The word histology is composed of the word “histos”, which means “tissue” in Greek and the Latin word “logos” for “doctrine”. In histology, i.e. “tissue science”, people use technical aids such as a light microscope in everyday life in order to recognize the structure of various … Histology
Frozen section analysis This is necessary if the surgeon needs information about the tissue removed during an operation in order to decide on the course of the procedure. For example, a small malignant tumor is removed from the kidney. Now a quick incision is required to see whether the tumor has been completely removed or … Frozen section analysis | Histology
A good 50 years ago, the two researchers James Watson and Francis Crick discovered the structure of DNA as the blueprint of all living things and thus the basis for growth and reproduction. Even though they proudly proclaimed at the time that they had solved the “secret of life,” they are unlikely to have realized … Gene Diagnostics
