Population definition biology

What does population mean? For interbreeding to occur, individuals must be able to mate with any other member of a population and produce fertile offspring. Populations can occur on various different scales.

A local population can be c. See full list on biologydictionary.

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). Community – A group consisting of various species, which interact with each other directly or passively, in a common location. However, due to habitat fragmen. 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. Which of the following scenarios best fits the definition of a population ? Five species of frog living in a swamp.

All of the sharks swimming off the west coast of Australia. All the individual mountain gorillas living in the dense forest of four national parks in Africa. The birds, bats and monkeys, which live in the rainforest of Ecuador. The numbers of individuals in a group becomes too high.

An event causes a significant loss of. A population bottleneck occurs when: A. As with any biological population, the size of a human population is limited by the supply of foo the effect of diseases, and other environmental factors. A group of such a closely related local population is called meta-population.

In biology, a population is a number of all the organisms of the same group or species who live in a particular geographical area and are capable of interbreeding. The area of a sexual population is the area where inter-breeding is possible between any pair within the area and more probable than cross-breeding with individuals from other areas. The health and behavior of a population is determined by the way those individuals interact with each.

In population genetics, the term evolution is defined as a change in the frequency of an allele in a population. Frequencies range from present in no individuals, to present in all individuals. The gene pool is the sum of all the alleles at all genes in a population. Science: epidemiology) number of individuals in a population relative to space.

Since these individuals are of the same species, they usually occupy the same niche in the ecosystem with similar habits and habitats. In biology , a population is a group of organisms of the same species that live in the same area.

How large a population is and how fast it is growing are often used as measures of its health. The population is the unit of natural selection and evolution. Some environmental and biological factors can influence a population differently depending on its density.

If population density is high, such factors become increasingly limiting on the success of the population. Members of a population often rely on the same resources, are subject to similar. In population biology , the term population refers to a group of members of a species living in the same area. The definition of population ecology is the study of how various factors affect population growth, rates of survival and reproduction, and risk of extinction. Allele Frequency The allele frequency (or gene frequency) is the rate at which a specific allele appears within a population.

How scientists define and measure population size, density, and distribution in space. The biological definition for the term population is a group of individuals of the same species living in the same place at a certain time.