Explain (1) what type of variation is always required for natural selection and (2) where this variation comes from?

1 answer:

4 0

When we talk about evolution we come across the process of natural selection. Genetic variation is always required for the natural selection. A change or variation in the genes may help the individuals in a population to better adapt to the environment. Such changes may be brought by mutations or random mating in the population. Such variations help in the survival of the population by allowing them to adapt to changing environmental conditions.

You might be interested in

Early one spring, a group of bird-watchers counted 30 different species of birds in a tract of forest. In the early spring two y

Gemiola [76]

The forest shows a decrease in biodiversity

5 0

2 years ago

El encargado de materiales de su grupo debe ir a recoger los materiales.

Bas_tet [7]

Answer:

todos deben tener los materiales por si a alguien se le olvida un material

tu se lo prestes

Explanation:

por que es en equipo

3 0

2 years ago

What would you expect to increase after a forest fire?<br><br> A.Erosion<br> B.Weathering

Lelu [443]

Answer:

B. Weathering

Explanation:

Fire makes trees weather and die.

3 0

2 years ago

Smaller dna fragments migrate _____ and further over a given period of time than larger fragments.

nordsb [41]

Smaller DNA fragments migrate <u>more quickly</u> and further over a given period of time than larger fragments.

<h3>Gel electrophoresis and DNA fragments</h3>

Gel electrophoresis is a method to separate DNA fragments (or RNA and other macromolecules) based on their size and charge, involving a gel called agarose. The molecules will travel through the gel at different speeds or in different directions, which allows them to be separated from each other.

Because all DNA molecules have the same amount of charge per mass, gel electrophoresis of DNA fragments separates DNA molecules based on size only. Shorter pieces of DNA travel through the pores of the gel more quickly than longer ones do.

Learn more about DNA fragments here: brainly.com/question/17568989

#SPJ4

4 0

11 months ago

How does genetics effects speciation?

Svet_ta [14]

Genetics affects speciation mostly via mutation caused due to adaptation and environmental conditions.

Explanation:

The Speciation is defined as the evolution of a species into a distinct species. The cause of this could be several, and some of them could be environmental conditions, mutations, etc

Environmental conditions include isolation of the species caused by mountain rise, river, flood etc. to survive they have to evolve or get adaptations to living in those conditions

Mutation happens for many reasons, external factors can also cause the mutations to occur. It will also lead to speciation.

8 0

3 years ago