33 results found

Search Results for: defect

Semilunar valve

The human heart structure consists of heart chambers (2 atria and 2 ventricles) that differ functionally from each other.... Read More

Fetus

The science of Embryology and Fetal development has fascinated mankind since time immemorial. After the embryonic stage, the... Read More

Haemophilia

Definition noun A condition that is characterized by uncontrolled bleeding from the mouth, gums, lips, and tongue,... Read More

Rachischisis

Definition noun The embryological failure of the neural tube to fuse or close completely thereby resulting in the vertebrae... Read More

Fructose

Fructose Definition Fructose is a ketohexose monosaccharide with a chemical formula of C6H12O6. It is the sweetest of all... Read More

Bivalent

Bivalent Definition What is bivalent? In genetics, bivalent is used in describing homologous chromosomes (referred to as... Read More

Valine

Amino acids are categorized into two groups based on the capability of the human body to synthesize them; essential and... Read More

Genetic disorder

Definition noun, plural: genetic disorders A disorder caused by genetic abnormality Supplement A genetic disorder is a... Read More

Haemophilia A

Definition noun A form of haemophilia that is caused by a deficiency in blood clotting factor VIII due to a gene defect in... Read More

Hemoglobinopathy

Definition noun, plural: hemoglobinopathies A genetic disorder resulting in an abnormal globin structure in the hemoglobin... Read More

Fibrocartilage

What Is Fibrocartilage? Fibrocartilage is the strongest transitional connective tissue made up of collagen fibers and... Read More

Albino

Definition noun, plural: albaninos An organism with albinism, which is a condition characterized mainly by a lack of or an... Read More

Sex-linked disorder

Definition noun, plural: sex-linked disorders A genetic disorder caused by or linked to gene(s) located in the sex... Read More

Pair-rule gene

Definition noun A segmentation gene whose expression subdivides the embryo into a series of stripes, and sets the boundaries... Read More

Osteopetrosis

Definition noun, plural: osteopetroses A rare hereditary disorder in which the bones are becoming excessively dense, thick,... Read More

Principles of Hormonal Control Systems

Hormones are chemical messengers that enter the blood directly upon their secretion from endocrine glands. A single gland or... Read More

Albinism

Definition noun A hereditary, congenital disorder characterized by the complete or partial lack of pigmentation production... Read More

System

A system pertains to interdependent or interrelated objects comprising and functioning as a whole. In biology, it may refer... Read More

Muscular dystrophy

muscular dystrophy A group of diseases characterised by progressive degeneration and/or loss of muscle fibres without... Read More

Manubrium

The manubrium is a handle-like structure, as in the manubrium of the sternum or of the malleus. In Latin, it translates to... Read More

Growth

Growth Definition What is growth in biology? Growth is the irreversible increase of an organism’s size over a given... Read More

Enzymopathy

Enzymopathy Any disturbance of enzyme function, including genetic deficiency or defect in specific enzymes. Origin: enzyme -... Read More

Inversion

Definition noun, plural: inversions (general) The reversal of state, form, position, direction, order, or course, such as... Read More

Quadrantanopia

Definition noun, plural: quadrantanopias A visual field defect characterized by a loss of vision in a quarter section of the... Read More

Dissociation

Dissociation 1. The act of separating or state of being separated. 2. (Science: chemistry) The separation of a molecule into... Read More

Syndrome

Definition Of Syndrome A syndrome is a collection of signs, symptoms, series of events, and/or characteristics that occur... Read More

Lethal mutation

Lethal Mutation Definition Genetic mutations come from changes in the DNA structure or sequencing in an organism. Often... Read More

Inbreeding

Inbreeding is a type of breeding or mating where closely related individuals with a common ancestor produce progenies with... Read More

Aqueous humor

Definition noun, plural: aqueous humors A clear, watery body fluid secreted by the ciliary epithelium, and fills the... Read More

Pawn

pawn mutant of Paramoecium that, like the chess piece, can only move forward and is unable to reverse to escape noxious... Read More

Atom

In the enchanting tapestry of life, the smallest of heroes and a celestial protagonist emerges—'the atom'. With grace and... Read More

Association

Association 1. (Science: neurology) correlation involving a high degree of modifiability and also consciousness. 2.... Read More

Examples of Natural Selection

Reviewed by: Mary Anne Clark, Ph.D. Darwin's Finches Darwin's finches are an excellent example of the way in... Read More