<span>The process of speciation is the
separation of a specific population into different species. The factors that
may affect to maintain this genetic isolation are: allopatric, sympatric,
prezygotic and postzygotic barriers. Allopatric barriers occurs when two
species that are of the same family before cannot go back to the way they were
before unless a contact between the two is established again. Sympatric are a
group of species that shared the same family before but forced to evolve
separately due to environmental factors. Prezygotic barriers are a group of species
that are formed from the developing fertilized egg. </span>
The CRISPR system targets DNA sequences for precisely cutting DNA and then letting natural DNA repair processes take over.
<h3>What is the CRISPR system?</h3>
CRISPR/Cas9 edits genes by accurately slicing DNA, which is then repaired by the body's mechanisms. The Cas9 enzyme and a guide RNA make up the system's two components. CRISPR stands for Clustered Regularly Interspaced Short Palindromic Repeats, which some bacterial species use as a component of their antiviral defenses. Co-founder Dr. Emmanuelle Charpentier and a team of researchers figured out how to employ this technology as a gene-editing tool (Jinek, et al. Science 2012) An enzyme known as a CRISPR-associated (Cas) endonuclease that functions as a "molecular scissors" to cut DNA where a guide specifies RNA. Deoxyribonucleic acid (DNA) is the genetic informational molecule that most organisms use to store the "instructions for life". Living beings employ ribonucleic acid (RNA), a molecule related to DNA, for a variety of tasks, including carrying and reading the DNA "instructions." RNA molecules known as "guide RNA" (gRNA) attach to Cas9.
Learn more about the CRISPR system here:
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C. Because data tables are good for keeping good track of your data and can make looking back on it and gathering evidence much easier
The answer is D, Rough endoplasmic reticulum.