98 results found

Search Results for: isolated

Allopatric speciation

We can define speciation as a process by which the novel genetically independent group of organisms are formed through the... Read More

Sympatric speciation

Speciation is a process of evolution through which two different existing populations evolve and a distinct species form. It... Read More

System

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

Sporadic

Events, diseases, behaviors, infections, flowering... all of these happen at different frequencies and manners in the world.... Read More

Cytokinin

Plants require growth hormones for their regulated growth. Plant growth hormones or regulators (PGRs) are small organic... Read More

Disruptive Selection

An evolutionary process known as disruptive selection (or disruptive natural selection) causes a population to become... Read More

Inbreeding

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

Indeterminate cleavage

Definition noun A type of cleavage on the basis of the potentiality of blastomeres in which the blastomeres (resulting... Read More

Archaea

Archaea is a group of prokaryotic life forms distinct from bacteria forming a separate domain of life. They possess... 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

Endemic

Global biodiversity is under threat and the rate at which species are getting endangered and extinct is alarming. If you... Read More

Plant Tissues

Plants are composed of three major organ groups: roots, stems, and leaves. As we know from other areas of biology, these... Read More

A Look Into Natural Selection and its Mechanisms

Charles Darwin is credited with outlining the fundamentals of evolution. He was a smart and eager pupil and protégé, and... Read More

Scientists brought dead pig brain partly back to life

Death is inevitable to any entity that has life. When there is a beginning there ought to be an end.  However, the recent... Read More

Species

Every living organism is unique when you observe its morphological, anatomical, molecular, genetic, biochemical, chemical,... Read More

Transgene

Definition noun, plural: transgenes A segment of DNA from one organism introduced into the genome of another organism (from... Read More

Rovsings sign

Rovsing's Sign Definition Rovsing's sign is when palpation on the left lower quadrant of the abdomen results in pain in the... Read More

Axenic culture

Definition noun A microbial culture that contains only one species, variety, or strain of... Read More

Incipient Species

A group of a particular species that are about to become genetically isolated from the rest of the species, perhaps due a... Read More

Restriction enzyme

Definition noun, plural: restriction enzymes An enzyme that catalyzes the cleavage of DNA at restriction sites, producing... Read More

Basolateral plasma membrane

Basolateral plasma membrane (Science: cell biology) The plasma membrane of epithelial cells that is adjacent to the basal... Read More

Coenzyme

Enzymes can break down complicated large molecules into simpler smaller ones, they can combine small molecules or atoms to... Read More

Taxonomy

Taxonomy Definition The term "taxonomy" was developed from two Greek words, "taxis," meaning arrangement, and "nomia,"... Read More

Spectrin

Definition noun plural: spectrins spec·trin, spĕk′trĭn A cytoplasmic membrane structure with contractile dimeric... Read More

Pentose

Definition noun, plural: pentoses A five-carbon monosaccharide Supplement Monosaccharides are the simplest form of... Read More

Demecolcine

Definition noun (cytogenetics) A cytotoxic alkaloid isolated from Colchicum autumnale, and is used as an antineoplast... Read More

Peristalsis

What is Peristalsis? Peristalsis is the series of involuntary, wave-like muscle movements in the cylindrical, hollow tube... Read More

Mitochondrion

Mitochondrion Definition What are mitochondria? The term “mitochondrion” comes from the two words of the Greek... Read More

Monosaccharide

Monosaccharide Definition In biology and biochemistry, a monosaccharide is a simple sugar that constitutes the building... Read More

Ribonucleic acid

Ribonucleic Acid Definition noun (uncountable), ribonucleic acids ri·bo·nu·cle·ic ac·id, raɪboʊnjuːkliːɪk... Read More

Lactogen

Lactogen An agent that stimulates milk production or secretion. Origin: Lacto-- g. -gen, producing human placental lactogen... Read More

At Home in the Universe: The Search for the Laws of Self-Organization and Complexity

At Home in the Universe: The Search for the Laws of Self-Organization and Complexity  ... Read More

Prophase I

Organisms all use mitosis to create more cells in the body. Meiosis, a similar process, is used in some organisms to undergo... Read More

Streptolysin O

Definition noun An oxygen-labile, immunogenic hemolysin produced by or derived from some strains of... Read More

Tetrose

Definition noun, plural: tetroses A four-carbon monosaccharide Supplement Monosaccharides are the simplest form of... Read More

New Zealand’s Biodiversity

Written by: Maria Victoria Gonzaga Peer-reviewed by: Cathy Buntting, Ph.D. and Andrea Soanes Why is New... Read More

Cladosporium species in indoor environments

Cladosporium is a fungus that mostly found in indoor and outdoor molds. It is a species that formed in simple or branching... Read More

Adaptive Radiation

Reviewed by: Mary Anne Clark, Ph.D. When Charles Darwin was in the Galapagos Islands, one of the first things he... Read More

The Gene Pool and Population Genetics

Reviewed by: Mary Anne Clark, Ph.D. The previous tutorial is about adaptive radiation. Adaptive radiation is... Read More

Community (biology)

Community, in biology, refers to the assemblage of interacting organisms (either of the same or different species)... Read More