Quick Answer: What Best Defines A Population?

What would happen if there was no genetic variation?

Without genetic variation, a population cannot evolve in response to changing environmental variables and, as a result, may face an increased risk of extinction.

But if they do not exist — if the right genetic variation is not present — the population will not evolve and could be wiped out by the disease..

What is the best definition of a population quizlet?

What is the best definition of a population? a group of organisms of the same species that live in the same area.

What is the define of population?

In statistics, a population is the entire pool from which a statistical sample is drawn. A population may refer to an entire group of people, objects, events, hospital visits, or measurements. A population can thus be said to be an aggregate observation of subjects grouped together by a common feature.

What is population Short answer?

A population is the number of living people that live together in the same place. A city’s population is the number of people living in that city. These people are called inhabitants or residents. The population includes all individuals that live in that certain area.

What is a niche in biology quizlet?

A niche describes how an organism fits into the environment. A niche refers to where an organism lives and what it does there. … A niche includes all abiotic and biotic conditions required for the organism to survive, reproduce and maintain a viable population.

Which of the following defines a community?

A community is a social unit (a group of living things) with commonality such as norms, religion, values, customs, or identity. Communities may share a sense of place situated in a given geographical area (e.g. a country, village, town, or neighbourhood) or in virtual space through communication platforms.

What increases genetic variation?

Sources of Genetic Variation Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation. New genetic variation can be created within generations in a population, so a population with rapid reproduction rates will probably have high genetic variation.

What are the two types of population?

The two types of population growth are exponential population growth and logistic population growth. This preview shows page 1 out of 1 page.

What is the basis of life’s variety?

In exploring the complex interrelations of life, scientists coined the term “biodiversity” from the words “biological” and “diversity” 20 years ago. This single world, biodiversity, describes the basis of life on earth. Three levels of diversity are distinguished between: genes, species and ecosystems.

How does a species differ from a population?

A species is a group of organisms that share similar characteristics and a species can live within many different areas. … A population is a group of one species that live within a particular area so the population of Field Mice in Iowa is different from the population of Field Mice in Africa.

What are the 3 ways in which natural selection can change a distribution of traits?

How natural selection can shift phenotype distributionsStabilizing selection. In stabilizing selection, intermediate phenotypes are more fit than extreme ones. … Directional selection. One extreme phenotype is more fit than all the other phenotypes. … Disruptive selection.

What is population and sample with example?

A population is the entire group that you want to draw conclusions about. A sample is the specific group that you will collect data from. The size of the sample is always less than the total size of the population. In research, a population doesn’t always refer to people.

What is an example of a population in an ecosystem?

Populations are all the members of a species that live in a one area. You are part of the human population for your home town. A freshwater pond has multiple populations, including a population of mallard ducks, and a population of cattail plants growing on the edge.

What are three examples of population?

What is a population? Give three examples. A set of measurements or counts either existing or conceptual. For example, the population of all ages of all people in Colorado; the population of weights of all students in your school; the population count of all antelope in Wyoming.

What is the definition of a population quizlet?

Population. a group of organisms of the same species living in an area at the same time. Community. a group of populations living and interacting with each other in an area.

What is the best example of a population?

Explanation: Population is defined as a group of organisms living in an ecosystem. Hence the fox living in a forest ecosystem is a population. Water , oxygen, carbon dioxide and light are the abiotic components in the environment.

What type of selection occurs when individuals in a population?

Natural selectionNatural selection occurs when individuals with certain genotypes are more likely than individuals with other genotypes to survive and reproduce, and thus to pass on their alleles to the next generation.

What is an example of a population?

Population is the number of people or animals in a particular place. An example of population is over eight million people living in New York City.