47 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,... 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

New Zealand’s Biodiversity

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

New Zealand’s Unique Fauna

By: Maria Victoria Gonzaga In the previous lesson, we learned about the high biodiversity of New Zealand and how... 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

Molecular genetics

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

Plaque assay

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

Species

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

Population Growth and Survivorship

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

Subspecies

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

New Zealand’s Unique Geographical History

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

coronavirus COVID-19

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

Natural selection

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

Monotreme

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

Cell morphology

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

Parapatric speciation

Definition noun A speciation in which the zones of two diverging populations are only partially separated that the species... 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

Nexin

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

Thymine

Definition noun plural: thymines thy·mine, ˈθaɪmɪn (biochemistry) A pyrimidine nucleobase in the DNA molecule that... Read More

Marker enzyme

Definition noun, plural: marker enzymes Any enzyme confined to a particular organelle, cell, or cellular... Read More

Prodromal period

There are five stages (or phases) of a disease. (Hattis, 2020). These stages are (1) Incubation period, (2) Prodromal... Read More

Insulation

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

Disruptive Selection

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

Cytokinin

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

Symbiosis

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

Culture medium

Culture medium a substance, either solid or liquid, used for the cultivation, isolation, identification, or storage of... Read More

Cytosine

Definition noun plural: cytosines cy·to·sine, ˈsaɪtəsiːn (biochemistry) A pyrimidine nucleobase that complementary... Read More

Race

Definition noun (1) A group or population of humans categorized on the basis of various sets of heritable characteristics... Read More