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Stock

stock group of organisms (all of the same species) that is genetically self-sustaining and isolated geographically or... Read More

Definition

Stock culture

stock culture A culture of a microorganism maintained solely for the purpose of keeping the microorganism in a viable... Read More

Definition

Null hypothesis

Null Hypothesis Definition Null hypothesis is defined as “the commonly accepted fact (such as the sky is blue) and... Read More

Definition

Symbiosis

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

Article

The consequences of antibiotic use in horticulture

Leading articles Frederick R. Falkiner* Department of Clinical Microbiology, Trinity College, Dublin; Central Pathology... Read More

Definition

Stag

stag 1. (Science: zoology) The adult male of the red deer (Cervus elaphus), a large European species closely related to the... Read More

Tutorial

Selective Breeding

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

Definition

Axenic culture

Definition noun A microbial culture that contains only one species, variety, or strain of... Read More

Definition

Leukocyte

Leukocytes, also called the white blood cells (WBCs), inhabiting our immune system are the cells that exhibit astonishing... Read More

Definition

Vaccine

Definition noun, plural: vaccines A suspension containing live, attenuated, modified, or killed microorganisms (or their... Read More

Definition

Pumpkin

pumpkin (Science: botany) A well-known trailing plant (Cucurbita pepo) and its fruit, used for cooking and for feeding... Read More

Definition

Spontaneous generation

Definition noun plural: spontaneous generations The previously popular notion that living organisms arise or develop from... Read More

Definition

Potato

potato Origin: Sp. Patata potato, batata sweet potato, from the native American name (probably batata) in Hayti. (Science:... Read More

Definition

Anchor

Anchor 1. A iron instrument which is attached to a ship by a cable (rope or chain), and which, being cast overboard, lays... Read More

Definition

Race

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

Definition

Breed

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

Definition

Affinity

Definition noun, plural: affinities (1) (taxonomy) The resemblances in structure between two organisms or between biological... Read More

Definition

Grade

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

Definition

Peach

peach (Science: botany) A well-known high-flavored juicy fruit, containing one or two seeds in a hard almond-like endocarp... Read More

Definition

Nut

Nut 1. (Science: botany) A dry one-seeded fruit which is indehiscent (i.e., it does not split open along a definite seam at... Read More

Definition

Plane

Plane 1. To make smooth; to level; to pare off the inequalities of the surface of, as of a board or other piece of wood, by... Read More

Definition

Generation

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

Definition

Agriculture

Agriculture The science of raising plants and/or animals for food, clothing or other useful products. The practice of... Read More

Definition

Dead

Dead 1. Deprived of life; opposed to alive and living; reduced to that state of a being in which the organs of motion and... Read More

Definition

Native

native 1. One who, or that which, is born in a place or country referred to; a denizen by birth; an animal, a fruit, or... Read More

Definition

Descend

Descend 1. To pass from a higher to a lower place; to move downwards; to come or go down in any way, as by falling, flowing,... Read More

Tutorial

Takahē (Porphyrio hochstetteri)

By: Maria Victoria Gonzaga Previously, we've seen the different animals endemic to New Zealand. Due to the... Read More

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