Biology, 28.08.2019 09:10 Aurionna101

Which are required for natural selection to occur? a- inheritance, isolation, adaption b- variation, overpopulation, adaptation c- isolation, overpopulation, speciationd- variation, inheritance, speciation

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Answer from: hermesrobles

In order for natural selection to occur b) variation, overpopulation, and adaptation are required

Answer from: isabellam646

Answer;

b- variation, overpopulation, adaptation

Explanation;Natural selection is a process that favors organisms with heritable traits that increase the survival chances of an organism, allowing the organism to reproduce more, while those organisms with no heritable traits undergo extinction.

Natural Selection requires:

Variation Overpopulation Adaptation: an inherited or learned trait that increases an organism's chance of survival in its environment.

Answer from: Quest

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

Answer from: Quest

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.

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