Dna is made up of what components? (hint: there are three). check all that apply.

phosphate molecule

ligase

nitrogenous base (nucleotide)

amino acid

deoxyribose sugar

enzymes

➷  The correct answers would be:

phosphate molecule, nitrogenous base and deoxyribose sugar.

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phosphate molecule, nitrogenous base and deoxyribose sugar.

Explanation:

DNA is a molecule present in the nucleus of cells responsible for the heredity of the physical and physiological characteristics of the body of all living beings.

DNA is a nucleic acid, just like RNA, and it is formed by the nitrogenous components (adenine, thymine, cytosine and gianine), a phosphate molecule and a sugar (deoxyribose).

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: