In endogenous apoptosis, the body initiates cell death of individual cells of its own body. In every organism, this process takes place to rid the body of diseased, dangerous, and no longer necessary cells. Disturbances in the body’s own apoptosis can lead to various diseases such as cancer or autoimmune diseases. What is apoptosis? The … Apoptosis: Function, Tasks, Role & Diseases
Definition – What are chromosomes? The genetic material of a cell is stored in the form of DNA (deoxyribonucleic acid) and its bases (adenine, thymine, guanine and cytosine). In all eukaryotic cells (animals, plants, fungi) this is present in the cell nucleus in the form of chromosomes. A chromosome consists of a single, coherent DNA … Chromosomes
What functions do the chromosomes have? The chromosome, as the organizational unit of our genetic material, serves primarily to ensure an even distribution of the duplicated genetic material to the daughter cells during cell division. For this purpose, it is worthwhile to take a closer look at the mechanisms of cell division or the cell … What functions do the chromosomes have? | Chromosomes
What is the normal set of chromosomes in humans? Human cells have 22 sex-independent chromosome pairs (autosomes) and two sex chromosomes (gonosomes), so a total of 46 chromosomes make up one set of chromosomes. Autosomes are usually present in pairs. The chromosomes of a pair are similar in shape and sequence of the genes and … What is the normal set of chromosomes in humans? | Chromosomes
What is a chromosomal aberration? The structural chromosomal aberration basically corresponds to the definition of chromosomal mutation (see above). If the amount of genetic material remains the same and is only distributed differently, this is called a balanced aberration. This is often done by translocation, i.e. the transfer of a chromosome segment to another chromosome. … What is a chromosomal aberration? | Chromosomes
What is a chromosome analysis? Chromosomal analysis is a cytogenetic method used to detect numerical or structural chromosomal aberrations. Such an analysis would be used, for example, in cases of immediate suspicion of a chromosomal syndrome, i.e. malformations (dysmorphies) or mental retardation (retardation), but also in infertility, regular miscarriages (abortions) and also certain types of … What is a chromosome analysis? | Chromosomes
Mitosis proceeds in several phases. Among them, prophase represents the beginning of mitosis. Disruptions in the prophase process prevent the initiation of cell division. What is prophase? Both mitosis and meiosis begin with prophase. In both cases, cell division occurs. However, while in mitosis the identical genetic material is passed on to the daughter cells, … Prophase: Function, Tasks, Role & Diseases
Heredity is responsible for making children resemble their relatives. Within the framework of complex processes, various characteristics are passed on to descendants via the chromosomes. In the process, two expressions for each trait always meet through the mother and father. What is heredity? Humans have 46 chromosomes. Chromosomes are carriers of DNA, on which all … Heredity: Function, Tasks, Role & Diseases
The entire human body is made up of water and a compound of chemical components. Important building blocks are the cells, the so-called spark plugs of the body. A collection of differentiated cells constitutes the tissue, with the cells performing similar tasks to the tissue itself to enable the body’s processes and form the necessary … Tissue: Structure, Function & Diseases
Definition Meiosis is a special form of nuclear division and is also called maturity division. It contains two divisions, which turns a diploid mother cell into four haploid daughter cells. These daughter cells each contain a 1-chromatide chromosome and are not identical. These daughter cells are needed for sexual reproduction. Introduction In men, the germ … Meiosis
What is the difference to mitosis? Meiosis is very similar to mitosis in terms of the second meiotic division, but there are some differences between the two nuclear divisions. The result of the meiosis are germ cells with a simple set of chromosomes, which are suitable for sexual reproduction. In mitosis, identical daughter cells with … What is the difference to mitosis? | Meiosis
How does trisomy 21 occur? Trisomy 21 is a disease caused by the triple presence of the 21st chromosome. In healthy cells the chromosomes are duplicated, so that the human being has a total of 46 chromosomes. A patient with trisomy 21 has 47 chromosomes and suffers from Down syndrome. The triple presence of the … How does trisomy 21 occur? | Meiosis
