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Fully revised and updated, the sixth edition of this dictionary provides comprehensive coverage of biology, biophysics, and biochemistry, as well as key terms from medicine and palaeontology. It includes biographies of key scientists, and feature articles on important topics, such as bioinformatics, genetically modified organisms, microarray ...
- Population Definition
- Examples of Populations
- Related Biology Terms
- Quiz
A population is the number of organisms of the same species that live in a particular geographic area at the same time, with the capability of interbreeding. For interbreeding to occur, individuals must be able to mate with any other member of a population and produce fertile offspring. However, populations contain genetic variationwithin themselve...
African Elephants
There are two traditionally recognized species of elephant, African elephants (Loxodonta Africana) and Asian Elephants (Elephas maximus), although recent research has divided the African elephants into two species: the African bush elephants (Loxodonta africana) and the African forest elephants (Loxodonta cyclotis). Populations of African elephants are believed to have existed on a continental-wide scale, numbering up to 5 million individuals in the early 1900s. However, due to habitat fragme...
Pond Populations
Within a habitat there can be many different populations; a small-scale example is a lake. A lake may provide a habitat for birds, fish, insects, amphibians and mammals such as otters or rats. Although each species is provided with resources from the lake, their populations are likely to rely on the habitat in unique ways. For fish, land presents an impenetrable barrier for dispersal. Without any way of leaving, an entire population of trout may exist solely within the lake and nowhere else....
Salmon
Many species of Salmon are anadromous, which means they are born in fresh water before migrating to the ocean to feed and mature, and return to fresh water to breed. Salmon tend to return to the same river that they were born in, in order to themselves spawn. Because of this strong desire to ‘home’, salmon usually do not stray far away from their native spawning site, although the dispersal distance depends largely on the particular species. Because most spawning sites are separated by land o...
Community– A group consisting of various species, which interact with each other directly or passively, in a common location.Species– A group of physically similar individuals, which are capable of reproducing with the outcome of fertile offspring.Gene pool– The set of genes present within a population or species.Speciation– The formation of new, distinct species.1. Which of the following scenarios best fits the definition of a population? A. Five species of frog living in a swamp. B. All of the sharks swimming off the west coast of Australia. C. All the individual mountain gorillas living in the dense forest of four national parks in Africa. D.The birds, bats and monkeys, which live in the rainforest of Ec...
May 26, 2022 · Biology is the branch of science that primarily deals with structure, function, growth, evolution, and distribution of organisms. Find out more about biology definition, principles, branches, and importance.
May 6, 2020 · Here are several examples of independent and dependent variables in experiments: In a study to determine whether how long a student sleeps affects test scores, the independent variable is the length of time spent sleeping while the dependent variable is the test score.
Jan 29, 2020 · It is comprised of two divisions that in the end, the resulting cell will contain half the chromosomal number of the parent cell. Know the different stages here... Offspring in the largest biology dictionary online.
Descriptive (or discovery) science, which is usually inductive, aims to observe, explore, and discover, while hypothesis-based science, which is usually deductive, begins with a specific question or problem and a potential answer or solution that can be tested.
A comprehensive list of scientific root words, prefixes, and suffixes to help understand biological terminology.
