54 results found

Search Results for: breed

Breed

Breed 1. A race or variety of men or other animals (or of plants), perpetuating its special or distinctive characteristics... Read More

Crossbreed

Definition noun, plural: crossbreeds The offspring of two purebred individuals from different varieties or breeds verb (1)... Read More

Selective Breeding

Reviewed by: Mary Anne Clark, PhD Thousands of years before Darwin proposed evolution by natural selection and... 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

Purebred

Definition noun, plural: purebreds An animal that is of pure breed, i.e. whose ancestors on both sides have been members of... Read More

Crossbreeding

Definition noun The act or process of producing offspring by mating purebred individuals of different breeds or... Read More

Interbreed

Breed animals or plants using parents of different races and varieties; cross a horse and a donkey; Mendel tried... Read More

Inbreeding

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

True breeding

Definition noun A kind of breeding in which the parents with a particular phenotype produce offspring only with the same... Read More

Race

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

Incomplete dominance

Incomplete Dominance Definition After Gregor Mendel discovered inheritance laws, the term ''incomplete dominance'' was... Read More

Disruptive Selection

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

Phenotypic ratio

Phenotypic Ratio Definition How would one define phenotypic ratio? The correlation between the amount of offspring that... Read More

Hypomelanism

All the body cells of living organisms bear some color due to one or the other pigment molecule or complex. The pigment can... Read More

Brood

Brood 1. The young birds hatched at one time; a hatch; as, a brood of chicken. As a hen doth gather her brood under her... Read More

Arthropod

Arthropod Definition What is an arthropod? An arthropod is an invertebrate living organism characterized by the presence of... Read More

Grade

Grade a harsh scraping or cutting; a grating. The grade of hatchets fiercely thrown. On wigwam log, and tree, and stone.... Read More

Apparent competition

Competition Definition One of the many branches of biology is ecology. Ecology is the study of the relationships that the... Read More

Fitness

A competing variant's frequency is rising in relation to other competing variants in a population under the biological... Read More

Inherited traits

What are Inherited Traits? The characteristics or traits that are passed from parents to offspring are known as inherited... Read More

Epistasis

Epistasis Definition What is epistasis in genetics? How does epistasis occur? The epistasis definition, in biology, refers... 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

Law of Segregation

Mendel’s Laws of Inheritance The father of genetics, Gregor Mendel, reported his findings in 1860 that initially were... Read More

Vertical gene transfer

Definition noun (genetics) The transfer of genes from parents to offspring Supplement Gene transfer refers to the movement... Read More

Domestic cat

Definition noun, plural: domestic cats A small domesticated Felis species, e.g. F. domestica or F. catus Supplement The... Read More

Early Mammals on Earth

By the time the dinosaurs were extinct 65 million years ago, the world's landmass had split up into more or less the... Read More

Freshwater Lentic Communities & Animals

Plants that live partially or completely submerged in water are deemed hydrophytes. A form of symbiosis occurs with these... 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

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

New Zealand’s Biodiversity

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

Carrying capacity

Carrying Capacity Definition What is carrying capacity? In biology and environmental science, the carrying capacity of a... Read More

Alpaca

Definition noun, plural: alpaca or alpacas (1) A camelid with long, fine, wooly hair, and closely related to llama,... Read More

Decomposer

Decomposer Definition The organisms that carry out the process of decay or breakdown of the dead organism are known as... Read More

Swarm

Definition noun, plural: swarms (1) A large number of insects or small organisms, particularly when they are in motion. (2)... Read More

Cat

Definition noun, plural: cats (1) A small domesticated Felis species, e.g. F. domestica or F. catus (2) Any of the several... Read More

Bears

Bears Definition Bears are mammals belonging to the family Ursidae. They typically have massive bodies, coarse heavy fur,... Read More

Feathers

Feather 1. (Science: ornithology) One of the peculiar dermal appendages, of several kinds, belonging to birds, as contour... Read More

Generation

Generation 1. The act of generating or begetting; procreation, as of animals. 2. Origination by some process, mathematical,... Read More

Aves

Aves Definition What are birds classified as? Birds constitute the class Aves of the kingdom Animalia. How to define Aves?... Read More