Albinism
...
3 Genetics
4 Culture
5 Albinism in
animals
6 External links
Lack of ... See also: List of albinos
Albinism in
animals
Albinism is not restricted to the human species—other
animals also carry these genes. Albinism tends to be more ...
Animal
... (mollusks)
Annelida (segmented worms)
animals are a major group of organisms , classified as ... on.
Aristotle divided the living world between
animals and plants , and this was followed by Carolus ... microscopic protozoa were originally considered
animals because they move, but are now treated ....
Biology
... ( pH ); at the organismal level warm-blooded
animals maintain a constant internal body temperature; ... physiology and considers how organ systems in
animals such as the nervous , immune , endocrine , ... is the discipline which involves the study of
animals , which includes the physiology ...
Brain
... please see its article.
In the anatomy of
animals , the brain , or encephalon , is the ...
Brains in nature
Although many classes of
animals have nervous systems, three groups of animals, ... the brain, called gyri , are characteristic of
animals with more advanced brains. These convolutions ...
Carnivore
... York named Carnivore .
Carnivores are
animals that eat a diet consisting mostly of meat . ... only) insects are called insectivores .
animals that are true carnivores
A true carnivore is ... .
Many dinosaurs and other extinct
animals were carnivores, for example the well known ...
Charles Darwin
... investigations of the life cycle of marine
animals on the shores of the Firth of Forth where Grant ... for homology , the radical theory that all
animals had similar organs differing only in complexity. ... followed up by The Expression of Emotions in
animals and Man . Darwin produced practical explanations ...
Common descent
... nor order: all of these latter have perished.
animals lacking a mouth could not live; others lacking ... Darwin , hypothesized that all warm-blooded
animals were descended from a single "living filament":
... it be too bold to imagine, that all warm-blooded
animals have arisen from one living filament, which THE ...
Cryptozoology
... is the study of rumored or mythological
animals that are presumed (at least by the researcher ... reported. Those who study or search for such
animals are called cryptozoologists , while the ... monumental 1955 book, On The Track of Unknown
animals is often seen as the disipline's genesis, but ...
Cold-blooded
... more technically known as poikilothermic , are
animals that have no internal metabolic mechanism for ... their body temperatures. Some (usually smaller)
animals have unregulated temperatures, but most have ... temeprature from the environment. Cold-blooded
animals are often referred to as ectotherms .
...
Warm-blooded
... known as endotherms , warm-blooded
animals control their body temperature by regulating ... and a constant body temperature, allowing these
animals to be active in cold temperatures. On the other ... possible speed and efficiency.
Warm blooded
animals warm themselves by digesting food. The ...
Evolution
... billion years, simple multicellular plants and
animals began to appear in the oceans. Soon after the emergence of the first
animals the Cambrian explosion (a period of unrivaled ... refers to the way human beings, as cultured
animals capable of symbolic (extrasomatic) learning, can ...
Foot and mouth disease
... also infect deer , goats , sheep , and other
animals with cloven hooves, as well as elephants , rats ... feet that may rupture and cause lameness. Adult
animals may suffer weight loss from which they do not ... can decline significantly. Though most
animals eventually recover from FMD, the disease can lead ...
Fungus
... like mold and mildew . Parasitic fungi infect
animals , including humans , other mammals , birds , ... . Exoenzymes act like the digestive enzymes of
animals , breaking apart large organic molecules, but ... now thought to be more closely related to the
animals and choanoflagellates . These groups are known ...
Herbivore
... however, and many fruit- and leaf-eating
animals also eat other parts of plants, notably roots and seeds . The diets of some herbivorous
animals vary with the seasons, especially in the ... times of year. Here is a list below that includes
animals that are unable to chew or digest animal matter.
...
Hermaphrodite
... showTocToggle("show","hide")
1 In
animals
2 In plants
3 Etymology
4 Reference
In
animals
Sequential hermaphrodite : The organism is ... . Hermaphrodism in plants is more complex than in
animals because plants can have hermaphroditic flowers as ...
Human
... nature, and their dominance over other
animals have given rise to attempts to explain the ... . The term "person" is thus used of non-human
animals , and could be used of a mythical being , an ... animal" ( animal loquens ), though non-human
animals are now known to use language too, and non-human ...
Animal
... (mollusks)
Annelida (segmented worms)
animals are a major group of organisms , classified as ... on.
Aristotle divided the living world between
animals and plants , and this was followed by Carolus ... microscopic protozoa were originally considered
animals because they move, but are now treated ....
Osmoregulation
... by osmosis from the side containing pure water.
animals in all environments (aquatic and terrestrial) ... plants
4 Osmoregulation in protoctists and
animals
5 Vertebrate excretory systems
5.1 ... the rate of transpiration.
Plants share with
animals the problems of obtaining water and in disposing ...
Paleontology
... of life on earth, of ancient plants and
animals based on the fossil record , evidence of their ... in invertebrate paleontology , which deals with
animals without backbones, or in
vertebrate paleontology , dealing with fossils of
animals with backbones, including fossil hominids ( ...
Polysaccharide
... can break the alpha- linkages. Humans and other
animals have amylases, so they can digest starches. ...
Glycogen is the storage form of glucose in
animals . It is a branched polymer of glucose. Glycogen ... by beta- linkages. Humans and many other
animals lack an enzyme to break the beta- linkages, so ...
Thermoregulation
... that any exact data on the temperature of
animals could be obtained. It was then found that local ... of internal parts, or in women and some
animals the vagina, uterus or bladder.
Occasionally ... regulation
1.1 Heat gains and losses in
animals
2 Types of thermoregulation
3 ...
Unsolved problems in biology
... Self . What is it? Why is it necessary for many
animals (especially mammals ) to sleep ? Or dream , ... Why is magnetite in living creatures? How do
animals possess long-range navigation and migration ... was the homing ability developed? How can some
animals detect earthquake precursors ? What are ...
Zoology
... discipline which involves the study of
animals .
Contents showTocToggle("show","hide") ... to both plants and animals. The biology of
animals is covered in several broad areas:
The physiology of
animals is studied under various fields including ...
Anatomy
... (embryology) and comparative anatomy (morphology), as far as vertebrate
animals are concerned; but only those parts of the lower
animals which are of interest in explaining human body structure are here dealt ...
Apoptosis
... , or the development of organisms from fertilized eggs to fully-developed
animals and plants. It has also suggested specific answers to why normal cells ... in the previous section on development, all tissue in multicellular
animals depends on continuous receipt of survival signals. In the case of T cells, ...
Reproduction
... days) produces up to 900. Both strategies can be favoured by evolution :
animals with few offspring can spend time nurturing and protecting them, hence greatly decreasing the need to reproduce; on the other hand,
animals with many offspring do not need to spend parental energy on nurturing, ...
Autotroph
... heterotrophs ) can utilize as food . Thus, heterotrophs —
animals , fungi , as well as most bacteria and protozoa — depend on ... by breaking down organic molecules in their food. Even carnivorous
animals rely on autotrophs because the energy and organic building blocks obtained ...
Biodiversity
... animal origin are wool , silk , fur , leather , lubricants , waxes.
animals may also be used as a mode of transport .
Tourism and recreation : ... for many areas, such as many parks and forests , where wild nature and
animals are a source of beauty and joy for many people. Ecotourism in ...
Bone
... structures, or organs , into which it is formed, found in many
animals . Bones support body structures, protect internal organs , and (in ... can be affected by arthritis .
Cut and polished bone from a variety of
animals is sometimes used as material for jewelry and other crafts.
...
Cancer
... an approach seems promising, the next step may be testing a treatment in
animals to see how it affects cancer in a living being and whether it has harmful effects. Of course, treatments that work well in the lab or in
animals do not always work well in people. Studies are done with cancer patients ...
Cloning
... clone extinct species is the need for nearly perfect DNA. Furthermore, if
animals were cloned from one individual, the significant problem of lack of ... development of cloning, there are many other applications, such as cloning
animals (eg. cattle and horses ), which appears to offer a much faster and more ...
Escherichia coli
... species of bacteria that live in the lower intestines of warm-blooded
animals (including birds and mammals ) and are necessary for the proper ... of dogs, and different strains of E. coli live in different kinds of
animals , so it is possible to tell whether fecal material in water came from ...
Enzyme
... down blood stains).
Digestive and metabolic enzymes
Nutrition in
animals relies on digestive enzymes such as salivary amylase , trypsin and ...
Chymosin : better known as rennet, contained in the stomachs of many
animals and causes milk to curdle
Chymotrypsin : can digest proteins
...
Eukaryote
... material is organized into membrane - bound nuclei . They include the
animals , plants , and fungi , which are mostly multicellular, as well as ... may be assigned to several supergroups:
Opisthokonts
animals , fungi , choanoflagellates , etc.
Amoebozoa Most lobose ...
Homeostasis
... the environment to determine the parameter. For instance, endothermic
animals maintain a constant body temperature, while ectothermic
animals exhibit wide variation in body temperature.
This is not to say that ...
Meiosis
... of chromosomes precedes the process of meiosis (during S phase ). Most
animals and plants are normally diploid, and use meiosis to produce sexual gametes , which fuse to form zygotes that develop into new organisms. In most
animals this is often the primary or only means of proliferation. In other ...
Muller's ratchet
... never go back.
By contrast, sexual reproduction allows most plants and
animals to create offspring with good copies of two genes via crossover. That is, ... while another animal has two normal copies of the gene, a mating of these
animals can produce offspring with the advantageous mutation and without the ...
Mycology
... fungi not being plants and being evolutionarily more closely related to
animals than plants). Pioneer mycologists were Elias Magnus Fries , Christian ... and socially important as they are responsible for diseases of
animals as well as plants like Potato blight (actually, an oomycete ).
Field ...
Nervous system
... senses , and initiates actions . (see Central Nervous System ).
In
animals with brains , the nervous system also generates and conducts thoughts and ... .
Vertebrate nervous systems
The nervous systems of vertebrate
animals are often divided into a central nervous system (CNS) and the ...
Olfaction
... sense of smell , is the detection of chemicals dissolved in air (or, by
animals that breathe water, in water). In vertebrates smells are sensed by the ... Olfaction
The importance of smell, and pheromones, to Humans and other
animals
Structure-odor relations: a modern perspective (PDF)
...