Answer:
<h3>tham khảo tệp đính kèm ở trên</h3>
B I think(sorry if you get this wrong)
Hellish- our planet was literally a giant ball of hot rock for a while. asteroids and comets, and small planets (moon) pounded the surface and made it inhospitable. (Plus our planet was just trying to figure out how to do planet stuff)
DNA replication needs to occur because existing cells divide to produce new cells. the DNA needs to be copied before cell division so that each new cell receives a full set of instructions
The experimental process of determining the relative location of genes or other segments of DNA along individual chromosomes is called Genome mapping or chromosome mapping.
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What is DNA?</h3>
Deoxyribonucleic acid is a polymer made of two polynucleotide chains that coil around one another to form a double helix and which contains the genetic material necessary for all known creatures, including many viruses, to develop, function, grow, and reproduce. Nucleic acids include DNA and ribonucleic acid (RNA). Nucleic acids are one of the four main categories of macromolecules that are necessary for all known forms of life, along with proteins, lipids, and complex carbohydrates (polysaccharides).
Because the two DNA strands are made up of simpler monomeric units termed nucleotides, they are referred to as polynucleotides.
To learn more about DNA with the help of given link:
brainly.com/question/16099437
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