65 results found

Search Results for: feathers

Feathers

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

Plumes

plume 1. A feather; especially, a soft, downy feather, or a long, conspicuous, or handsome feather. Wings . . . Of many a... Read More

Plume

plume 1. A feather; especially, a soft, downy feather, or a long, conspicuous, or handsome feather. Wings . . . Of many a... Read More

Plumage

plumage (Science: zoology) The entire clothing of a bird. It consist of the contour feathers, or the ordinary feathers... Read More

Natural selection

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

Ostrich

ostrich (Science: zoology) A large bird of the genus struthio, of which Struthio camelus of Africa is the best known... Read More

Epidermis

Epidermis Definition What is the epidermis? We can define the epidermis as one or more layers of cells forming the tough... Read More

Incomplete dominance

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

Hydrophobic

Hydrophobic Definition The fear of mixing or reacting with water under a given set of reaction parameters is often referred... Read More

Non-Mendelian Inheritance

Reviewed by: Mary Anne Clark, Ph.D. The inheritance patterns seen in Mendel's monohybrid and dihybrid crosses... Read More

Flight

Flight 1. The act or flying; a passing through the air by the help of wings; volitation; mode or style of flying. Like the... Read More

Owl

owl 1. (Science: ornithology) Any cpecies of raptorial birds of the family Strigidae. They have large eyes and ears, and a... Read More

Keratin

Definition noun, plural: keratins One of the fibrous structural proteins, and is a constituent of hair, nails, skin,... Read More

Frill

Frill 1. To shake or shiver as with cold; as, the hawk frills. 2. (Science: photography) to wrinkle; said of the gelatin... Read More

Frills

Frill 1. To shake or shiver as with cold; as, the hawk frills. 2. (Science: photography) to wrinkle; said of the gelatin... Read More

Biome

Biome Definition What are biomes? There is no universal definition of biomes. But biome definition in biology of different... Read More

Secretary

secretary 1. One who keeps, or is intrusted with, secrets. 2. A person employed to write orders, letters, dispatches, public... Read More

Pluck

pluck 1. To pull; to draw. Its own nature . . . Plucks on its own dissolution. (Je. Taylor) 2. Especially, to pull with... Read More

Umbrella

umbrella 1. A shade, screen, or guard, carried in the hand for sheltering the person from the rays of the sun, or from rain... Read More

Melanin

Definition noun A group of insoluble pigments found in melanophores and produced from the oxidation of tyrosine, followed by... Read More

Analogous structures

In evolutionary biology, analogous structures are defined as biological structures having similar or corresponding functions... 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

Shaft

shaft 1. The slender, smooth stem of an arrow; hence, an arrow. His sleep, his meat, his drink, is him bereft, That lean he... Read More

Albino

Definition noun, plural: albaninos An organism with albinism, which is a condition characterized mainly by a lack of or an... Read More

Shed

shed 1. To fall in drops; to pour. Such a rain down from the welkin shadde. (Chaucer) 2. To let fall the parts, as seeds or... Read More

Zebra

zebra (Science: zoology) Either one of two species of south african wild horses remarkable for having the body white or... Read More

Cornification

Definition noun, plural: cornifications The process of forming a keratinized, horny layer of epidermis cornified,... Read More

Scleroprotein

Definition noun, plural: scleroproteins A type of protein characterized by being fibrous and its function which is to... Read More

Albinism

Definition noun A hereditary, congenital disorder characterized by the complete or partial lack of pigmentation production... Read More

Apomorphy

Apomorphy Definition Apomorphy (biology definition): A derived trait or characteristic that identifies a species or a... Read More

Eumelanin

Definition noun An aggregate of pigment molecules, each made up of cross-linked 5,6-dihydroxyindole (DHI) and... Read More

Polymorphism

Polymorphism Definition The occurrence of two or more different forms or morphs in the population of a species is referred... Read More

Melanogenesis

Definition noun The process of producing melanin Supplement Melanogenesis is the process of melanin production. Melanocytes... Read More

Imp

Imp 1. A shoot; a scion; a bud; a slip; a graft. 2. An offspring; progeny; child; scion. The tender imp was weaned.... Read More

Fruits, Flowers, and Seeds

Flowering plants grow in a wide variety of habitats and environments. They can go from germination of a seed to a mature... Read More

Amelanism

Definition noun A condition characterized by the complete lack of pigments (or melanin) Supplement Melanin is a compound... Read More

On Mate Selection Evolution: Are intelligent males more attractive?

A study published in Science on January 11 seems to be the first to lay empirical evidence that concur with Charles Darwin's... Read More

Micromolecule

Micromolecules Definition How to define micromolecule? Micromolecules are relatively small molecules that are combined... Read More

Macrophytes

Introduction    Examples of Macrophytes. (Source: Canada's AquaticEnvironments) ... Read More