The phenotype is the outwardly visible appearance of an organism with its various characteristics. Both genetic makeup (genotype) and environment influence the expression of the phenotype. What is the phenotype? The phenotype is the outwardly visible appearance of an organism with its various characteristics. The visible expressions of an organism, but also the behavior and … Phenotype: Function, Tasks, Role & Diseases
Chediak-Higashi syndrome (CHS) is an inherited disorder. Due to an immunodeficiency, the gene abnormality is associated with recurrent infections, peripheral neuropathy, and partial albinism. The life expectancy of affected individuals is greatly reduced. Bone marrow transplantation offers a chance of therapy. What is Chediak-Higashi syndrome? Chediak-Hygashi syndrome is a very rare autosomal recessive inherited disorder. … Chediak-Higashi Syndrome: Causes, Symptoms & Treatment
Hypopigmentation is a specific symptom of human skin or hair. Hypopigmentation is usually characterized by the fact that the number of melanocytes is greatly reduced. The symptom can also occur when the formation of the skin pigment melanin is decreased. Basically, hypopigmentation can be both congenital and acquired. What is hypopigmentation? Symptoms of hypopigmentation can … Hypopigmentation: Causes, Treatment & Help
The iris, or iris, is a pigment-enriched structure in the eye between the cornea and the lens that encloses the visual hole (pupil) in the center and serves as a kind of diaphragm for optimal imaging of objects on the retina. Muscles in the iris can regulate the size of the pupil and thus the … Iris: Structure, Function & Diseases
DNA is considered the Holy Grail of genetics and evolutionary biology alike. Without DNA as the carrier of hereditary information, complex life on this planet is unthinkable. What is DNA? DNA is the abbreviation for “deoxyribonucleic acid“. For biochemists, this designation already says the most important things about its structure, but in normal cases it … DNA: Structure, Function & Diseases
The genotype is the totality of all genes in the cell nucleus. Based on their arrangement, processes in the body are initiated and body compartments such as organs and external characteristics are formed. Moreover, the causes of many diseases are hidden in the genotype. What is the genotype? Genotype genes are located on the 46 … Genotype: Function, Tasks, Role & Diseases
Griscelli syndrome is an autosomal recessive inherited pigmentary disorder of the skin and hair, of which three different manifestations, type 1 to type 3, are known. Each type of the inherited disorder is caused by mutations at different genes and is associated to varying degrees with concomitant spleen and liver enlargement, decreased neutrophil granulocyte counts, … Griscelli Syndrome: Causes, Symptoms & Treatment
Piebaldism is a form of albinism caused by a mutation. The white forelock of affected individuals is characteristic. Because of their depigmentation, patients are more susceptible to black skin cancer caused by UV light and should avoid excessive sun exposure. What is piebaldism? Albinism corresponds to a group of hereditary disorders that manifest as an … Piebaldism: Causes, Symptoms & Treatment
A pigment disorder can affect people at any age and also manifests itself in different forms and manifestations. For example, the entire body can be affected by the disease or only individual parts of the body. Some forms can be prevented, while other types of pigment disorder can be treated but not prevented. What is … Pigment Disorder: Causes, Symptoms & Treatment
Hermansky-Pudlak syndrome is a hereditary disease that occurs very rarely. The disorder is also referred to by the abbreviation HPS in numerous cases. Hermansky-Pudlak syndrome is characterized by the fact that affected individuals mainly suffer from typical disorders and abnormalities of the skin. What is Hermansky-Pudlak syndrome? Basically, Hermansky-Pudlak syndrome represents a disease that occurs … Hermansky-Pudlak Syndrome: Causes, Symptoms & Treatment
In albinism, a genetic effect causes a deficiency or complete absence of melanin. Among other things, melanin is responsible for the formation of pigments in the skin, eyes and also hair. Albinism, which does not only occur in humans, can become a very conspicuous disease to the outside world. Affected individuals are often referred to … Albinism: Causes, Symptoms & Treatment
Nystagmus, or eye tremor, represents a restriction of vision. It occurs even in healthy people and is therefore not pathological in every case. The nystagmus is to be distinguished from eye twitching and eye flickering. What is nystagmus? Eye tremor (nystagmus) is generally understood to be an involuntary eye movement in a horizontal direction. Eye … Nystagmus (Eye Tremor): Causes, Treatment & Help
