76 results found

Search Results for: migration

Migration

Definition noun, plural: migrations (1) Passing from one part to another, said of certain morbid processes or symptoms (2)... Read More

Tracking the migration of Whip-poor-will in Americas

Eastern whip-poor-will (Antrostomus vociferous) is continuously declining due to habitat loss and unavailability of insects... Read More

Emigration

Definition noun, plural: emigrations (ecology) The act of leaving a habitat or place with the intent of moving to a... Read More

Allopatric speciation

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

Genetic drift

Genetic Drift Definition What is genetic drift in simple terms? The simple definition of genetic drift ( also referred to... Read More

Infradian rhythm

What is the Infradian Rhythm? An infradian rhythm is a type of biological rhythm that lasts longer than 24 hours, with a... Read More

Density dependent limiting factor

What Is A Density-Dependent Limiting Factor? Density-dependent limiting factors are limiting factors, which, depending on... Read More

Embryo

An embryo refers to the early developmental stage of a multicellular organism that follows fertilization. This stage... Read More

Demographic transition

The demographic transition model is a theoretical framework that explains the historical shift in population dynamics as a... 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

Darwinian fitness

Darwinian Fitness Definition Darwinian fitness refers to the measure of an individual organism's or genotype's reproductive... Read More

Fluid mosaic model

Fluid Mosaic Model Definition What is the fluid mosaic model? The fluid mosaic model is a three-dimensional representation... Read More

Macrophage

Definition noun, plural: macrophages A leukocyte whose main function is to eliminate cellular debris and foreign particles... Read More

Genetic diversity

Genetic Diversity Definition Each species is composed of individuals with their own set of genes. A gene is the inheritance... Read More

Autocrine signaling

Autocrine Signaling Definition What is autocrine signaling? Autocrine signaling is a type of cell signaling wherein a cell... Read More

Density dependent factor

Density-dependent factors are the limiting factors of an ecosystem that regulate population growth in a density-dependent... Read More

Expatriation

Migration from a place (especially migration from your native country in order to settle in... Read More

Centrosome

Centrosome Definition What is a centrosome? The centrosome is considered to be the main microtubule-organizing... Read More

Divergent evolution

Divergent Evolution Definition Divergent evolution refers to the process by which interbreeding species diverged into two... Read More

Population Growth and Survivorship

By: Maria Victoria GonzagaPreviously, we learned about biodiversity and endemism. Now, let's look at the... Read More

Electrophoresis

Electrophoresis (Science: technique) separation of ionic molecules, (principally proteins) by the differential migration... Read More

Meiosis

What is Meiosis? A simple definition of meiosis would be is this: meiosis is the process of cell division that results in... Read More

Agar

What Is Agar? Agar, also called agar agar, is a natural gelling agent derived from seaweed (specifically algae belonging to... Read More

Y chromosome

Y chromosome Definition The Y chromosome constitutes one member of the pair of sex chromosomes within an organism, a common... Read More

Fibroblast

The building block of living things is known as the cell. The cell contributes to many parts and functions of different... Read More

Cell adhesion

Cell Adhesion Definition Cell adhesion is the process in which a cell uses a specialized complex of proteins to get... Read More

Inflammatory response

Definition noun, plural: inflammatory responses (medicine) A response of the body to an injurious agent, characterized by... Read More

Gene flow

Definition noun The movement and exchange of genes or alleles from one population of species to another Supplement Gene flow... Read More

Fibrinous exudate

What Is Fibrinous Exudate? Fibrinous exudate is a type of exudate (inflammatory fluid) that forms at the site of tissue... Read More

Myogenesis

Definition noun (embryology) The formation of muscle tissues through the differentiation of progenitor cells myoblasts... Read More

Chemokine

Definition noun, plural: chemokines A chemotactic cytokine released by cells to function in chemotaxis, inflammation, and... Read More

Electrotropism

Definition noun Growth or movement of a cell or an organism in response to an electric field Supplement In general, tropism... Read More

Mycoplankton

Definition noun The fungi or fungus-like component of plankton Supplement Plankton pertain to the small organisms that... Read More

Bacterioplankton

Definition noun The bacterial component of plankton of aquatic ecosystems Supplement Plankton pertain to the small organisms... Read More

Tight junction

What are tight junctions? Tight junctions are the intercellular barrier between two neighboring endothelial and epithelial... Read More

Bone matrix

Bone Matrix Definition Bone matrix refers to the matrix component of bone tissue. It provides the structural framework and... Read More

Lacuna

Definition of Lacuna What is lacuna? The word "lacuna" (noun, plural: lacunae) is derived from the Latin word- 'lacus',... Read More

Environmental resistance

Environmental Resistance Definition Environmental resistance is such a process in which certain different elements or... Read More

Glycosaminoglycan

Definition noun (biochemistry) The polysaccharide unit of proteoglycan Supplement Glycosaminoglycans are the polysaccharide... Read More

Nematology

Definition noun The scientific study of nematodes (roundworms) Supplement Nematology is a branch of biology that deals... Read More