53 results found

Search Results for: isolation

Genetic isolation

Definition noun The lack of interbreeding or little genetic mixing between organisms of the same... 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

Sympatric speciation

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

Isolation

Isolation (Science: procedure) Any procedure in which a given species of organism, present in a particular sample or... 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

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

Evolution

Evolution Definition Evolution is defined as a change in the genetic composition of a population over successive... Read More

Hypertrophy

Hypertrophy Definition Hypertrophy refers to the enlargement or increase in the size of an organ or tissue due to the... Read More

New Zealand’s Biodiversity

Written by: Maria Victoria GonzagaPeer-reviewed by: Cathy Buntting, Ph.D. and Andrea SoanesWhy is New... Read More

Speciation

Definition noun, plural: speciations The process in which new genetically distinct species evolve usually as a result of... Read More

Reproductive isolation

Process: gene Flow is prevented between two populations of the same species. Reproductive isolating mechanisms are factors... Read More

Plaque assay

Definition noun An assay used for virus isolation and purification, and to determine viral titers. Supplement The plaque... Read More

New Zealand’s Unique Fauna

By: Maria Victoria GonzagaIn the previous lesson, we learned about the high biodiversity of New Zealand and how... Read More

Species

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

Allopatry

Definition noun The occurrence of population of related organisms in separate, non-overlapping geographic areas such that... Read More

Genetic isolate

Definition noun, plural: genetic isolates A population of organisms that has minimal genetic mixing due to geographical... Read More

Ecology & Biodiversity: New Zealand Flora & Fauna

New Zealand is known for its unique biodiversity, caused by its remarkable geography and geologic history. Breaking away... Read More

Molecular genetics

Definition noun A branch of genetics that deal with the structure and function of genes at a molecular... Read More

Monotreme

Definition noun (zoology) Any of the egg-laying mammals belonging to the taxonomic group, Monotremata Supplement The class... Read More

New Zealand’s Unique Geographical History

Written by: Maria Victoria GonzagaPeer-reviewed by: Cathy Buntting, Ph.D. and Andrea SoanesNew Zealand is... Read More

Symbiosis

Symbiosis Definition What is symbiosis? Symbiosis can be defined as any kind of relationship or interaction between two... Read More

Insulation

Insulation 1. The act of insulating, or the state of being insulated; detachment from other objects; isolation. 2. (Science:... Read More

Nutrient medium

nutrient medium --> culture medium A substance, either solid or liquid, used for the cultivation, isolation,... Read More

Subspecies

subspecies A group somewhat lessdistinct than speciesusually are, but based on characters more important than those which... Read More

Nexin

Definition noun The protein in the interdoublet link that connects the adjacent microtubule doublets of the ciliary... Read More

Thymine

Thymine Definition A thymine is a pyrimidine nucleobase in the DNA molecule that complementary pairs with adenine. It has a... Read More

Centrosome

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

Thalassophobia

Among many psychological and psychiatric disorders, one is the fear of the ocean and the fear of deep water, which in... Read More

Disruptive Selection

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

Smooth muscle

The smooth muscle can be described as a type of muscle in the human body that is non-striated and involuntary in action.... Read More

Cell morphology

The basic essence for any living organism is its structural framework which includes appearance, form, and the... Read More

Pathogen

What are Pathogens? Pathogens are defined as microscopic organisms, including viruses, bacteria, fungi, and parasites that... 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

Fluctuation test

Fluctuation test (Science: investigation) test devised by Luria and Delbruck to determine whether genetic variation in a... Read More

coronavirus COVID-19

Coronavirus Disease 2019 (COVID-19) Coronavirus Disease 2019 (COVID-19) is a contagious coronavirus disease first detected... Read More

Cell division

Cell division is a biological process by which a parent cell duplicates its cell contents and divides to give rise to two or... Read More

Peripatric speciation

Definition noun A speciation in which new species evolve in a sub-population that colonized a new habitat or niche within... 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

Natural selection

Natural Selection Definition What is natural selection in biology? Natural selection is defined as a process in nature... Read More

Population Growth and Survivorship

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