Animals

Animals, domestic animals which have become adapted through breeding in captivity to a life intimately associated with man. They include animals domesticated by man to live and breed in a tame condition on farms or ranches (e.g.

Transgenic Animals A transgenic animal is one that carries a foreign gene that has been deliberately inserted into its genome. The foreign gene is constructed using recombinant DNA methodology.

Animals with homogeneous appearance, behavior, and other characteristics are known as particular breeds, and they are bred through culling particular traits and selecting for others.

Animals are multicellular heterotrophs whose cells lack cell walls. At some point during their lives, all animals are capable of movement, although not all animals have muscles they use for this.

Animals that are true carnivores A true carnivore is an animal that subsists primarily on a diet consisting only of meat.

Animals in utero can be affected by hormones produced by nearby siblings of the opposite sex. The placement of an animal, such as a mouse in a litter, may have a long-term effect on physiology or behavior.

animals having a temporary or permanent dorsal skeletal notochord Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...

Animals are adapted to handle long, cold winters and to breed and raise young quickly in the summer. Animals such as mammals and birds also have additional insulation from fat. Many animals hibernate during the winter because food is not abundant.

Animals with three segmented body regions, a jointed exoskeleton, blood in body cavities, and a complex nervous system. Includes spiders and insects. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...

Animals that lack a coelom (body cavity). Was this definition helpful? Would you have liked more information?

Animals Increased resistance, productivity, hardiness, and feed efficiency Better yields of meat, eggs, and milk Improved animal health and diagnostic methods ...

Animals store extra carbohydrates as glycogen in the liver and muscles. Between meals, the liver breaks down glycogen to glucose in order to keep the concentration of glucoses in the blood stable.

animals Members of the kingdom Animalia, which consists of heterotrophic, eukaryotic, and multicellular organisms. anisogametes Outwardly dissimilar male and female gametes. Anisogamy is the condition of having dissimilar male and female gametes.

Animals start appearing prior to the Cambrian, about 600 million years ago. The first animals dating from just before the Cambrian were found in rocks near Adelaide, Australia.

In animals: solubulized food material is absorbed into the circulatory system through cells lining the alimentary canal. abzyme See catalytic antibody. acaricide A pesticide used to kill or control mites or ticks.

In animals, a physiological state that conserves energy by slowing down the heart and respiratory systems. totipotency The ability of embryonic cells to retain the potential to form all parts of the animal.

All animals, other than the insects, have a very efficient closed circulatory system. There is a heart which pumps blood to the arteries, arterioles, capillaries, and venules and veins which collect the blood and bring it back to the heart.

Congenic: Animals which have been bred to be genetically identical except for a single gene locus.

Meiofauna. Animals whose shortest dimension is less than 0.5 mm but greater than or equal to 0.1 mm ...

capitulum In animals it is the rounded rib head that articulates with the centrum of the vertebra. In plants it is a head of flowers. capsid the protein shell that encloses the viral genome; rod-shaped, polyhedral, or more completely shaped.

mesoderm -- In animals with three tissue layers (i.e. all except sponges and cnidarians), the middle layer of tissue, between the ectoderm and the endoderm.

Group of animals or plants presumably related by descent from common ancestors and phenotypically similar in most traits. Cf. breeding line. Related Terms: Phenotype ...

protozoa - tiny animals; most feed on microorganisms yeast - eukaryotic organisms larger than most bacteria, commonly divides by budding ...

Phylon A group of animals or plants constructed on a similar general plan, a primary division in classification.

Many naturally occurring cancers of vertebrate animals are caused by retroviruses. Reverse genetics.

Allen's Rule: The warmer the climate the longer the appendages (ears, legs, wings) of warm blooded animals in comparison with closely related taxa from colder climes.

DNA, or deoxyribonucleic acid, is the central information storage system of most animals and plants, and even some viruses.

Many eukaryotes, including stressed plants, insects, deep-sea animals and kidney tubule cells, adapt to environmental variation by making or accumulating diverse inositol derivatives as ‘compatible' solutes.

The fundamental life processes of plants and animals depend on a variety of chemical reactions that occur in specialized areas of the organism's cells. Genetics 2. Mutation and sexual reproduction lead to genetic variation in a population. 3.

Zoology is the discipline which involves the study of animals, which includes the physiology of animals is studied under various fields including anatomy and embryology.

deuterostomes - broad classification of triploblastic animals including echinoderms and chordates that tend to share certain embryological traits; among these the formation of the "mouth second" (hence the name) during gastrulation, ...

Predator: An animal that attacks and feeds on other animals, normally killing several individuals during its life cycle. Pronotum: The upper, often shield-like, hardened body-wall plate, located just behind the head of an insect.

Recombination occurs naturally in plants and animals during the production of sex cells (sperm, eggs, pollen) and their subsequent joining in fertilization. In microbes, genetic material is recombined naturally during conjugation.

gossypol. A substance poisonous to many animals, produced by numerous small glands in most cotton varieties. graft union. Place where the rootstock joins the scion or top part of a grafted tree or vine.

[Gr. zoon - animal; planktos - wandering]. Minute aquatic animals that drift freely in the plankton, feeding mainly on phytoplankton (plant-like organisms) and having no locomotory structures.

Dissections provide a way for learning about the internal and external anatomical structures of animals. For many people however, dissections can be very disturbing.

Predation when a larger animal eats other (smaller) animals (preda = prey‚ booty)    Presbyopia being farsighted‚ not being able to see close objects clearly (presby = old‚ an old person; -opia = vision‚ eye)    ...

agency responsible for regulation of biotechnology products in plants and animals. The major laws under which the agency has regulatory powers include the Federal Plant Pest Act (PPA), the Federal Seed Act, and the Plant Variety Act (PVA).

antibodies - a molecule produced by animals in response to antigen which has the particular property of combining specifically with the antigen which induced its formation ...

The development of transgenic animals to produce human proteins for medical use. Molecular genetics The study of macromolecules important in biological inheritance.

Humans and most mammals are diploid in their genome organization, but many plants and lower animals have only a haploid set of chromosomes.

Haploid: A single set of chromosomes (half the full set of genetic material), present in the egg and sperm cells o f animals and in the egg and pollen cells of plants. Human beings have 23 chromosomes in their sex cells. Compare to diploid.

Their association with gene technology is because the animals will have to be genetically modified so that their organs when removed will 'look' sufficiently like human organs to the recipient's immune system that they will not be rejected.

The biological variety in an environment as indicated by numbers of different species of plants and animals. Source : Word Central's Student Dictionary Biotechnology ...

For example, a laser beam can be used to focus on and kill one cell in C. elegans. In other experimental animals, a controllable promoter may be used to selectively express a toxin gene in a small number of cells.

See also: Animal, Organ, Human, Trans, Plant