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Feathers

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

Definition

Plume

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

Definition

Plumes

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

Tutorial

Non-Mendelian Inheritance

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

Definition

Sexual selection

What is Sexual Selection? The definition of sexual selection is very interesting in biological terms. The sexual selection... Read More

Definition

Weight

weight 1. The quality of being heavy; that property of bodies by which they tend toward the center of the earth; the effect... Read More

Definition

Vibrissa

Definition noun, plural: vibrissae (1) A whisker of an animal, e.g. cat (2) A long, slender, bristle-like feather at the... Read More

Definition

Fin

Fin 1. (Science: marine biology, zoology) An organ of a fish, consisting of a membrane supported by rays, or little bony or... Read More

Definition

Quill

quill 1. One of the large feathers of a bird's wing, or one of the rectrices of the tail; also, the stock of such a... Read More

Definition

Barb

Barb 1. To shave or dress the beard of. 2. To clip; to mow. 3. To furnish with barbs, or with that which will hold or hurt... Read More

Definition

Plumule

Definition noun (1) (botany) The bud of a young plant; the portion of the plant embryo giving rise to the first true leaves,... Read More

Definition

Carcinology

Definition noun A biological discipline that studies crustaceans Supplement Carcinology is a branch of zoology that deals... Read More

Definition

Analogous structures

Analogous Structures Definition In evolutionary biology, analogous structures are biological structures having similar or... Read More

Definition

Penniform muscle

Definition noun A flat muscle with fascicles arranged obliquely to the central tendon. Supplement Penniform muscles,... Read More

Definition

Hyaline cartilage

Hyaline Cartilage Definition Before we define hyaline cartilage, let us understand what cartilage is. What is cartilage? Is... Read More

Definition

Lepidoptera

Lepidoptera (Science: zoology) An order of insects, which includes the butterflies and moths. They have broad wings, covered... Read More

Article

Kelp

The swaying and winding of kelp in the ocean currents has an entrancing, hypnotic quality that would be the envy of the... Read More

Definition

Keratin

Keratin is a fibrous protein naturally present in hair, skin, and nails. In hair care, it serves as a protective and... Read More

Definition

Spline

spline 1. A rectangular piece fitting grooves like key seats in a hub and a shaft, so that while the one may slide endwise... Read More

Definition

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

Definition

Filament

Definition noun, plural: filaments (1) threadlike structure. (2) a fiber or fibril. (3) a long chain of protein subunit, as... Read More

Definition

Ferns

Fern (Science: botany) An order of cryptogamous plants, the Filices, which have their fructification on the back of the... Read More

Definition

Plumage

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

Definition

Moss

moss To cover or overgrow with moss. An oak whose boughs were mossed with age. (Shak) Origin: Mossed; Mossing. 1. (Science:... Read More

Definition

Vent

vent To snuff; to breathe or puff out; to snort. Origin: Cf. F. Venter to blow, vent wind (see Ventilate); but prob... Read More

Definition

Leaflets

The word "leaflet" is defined as one of the individual leaf-like structures comprising a compound leaf. A quick look at a... Read More

Definition

Aves

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

Definition

Eye

Definition noun, plural: eyes (1) The organ of sight or vision; the visual sense; the sense of seeing. (2) A mark... Read More

Definition

Umbilicus

umbilicus 1. (Science: anatomy) The depression, or mark, in the median line of the abdomen, which indicates the point where... Read More

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