If mutation destroys the function of the Cas9 gene then the bacteria will not be able to target a specific bacteriophage for destruction upon infection for the second time.
<h3>What is the Cas9 gene?</h3>
- Cas9 is a 160 kilodalton protein that plays a vital role in the immunological defense of certain bacteria against DNA viruses and plasmids and is heavily utilized in genetic engineering applications.
- Its main function is to cut DNA and thereby alter a cell's genome.
- Although Cas9 is an endonuclease and is evolved as a mechanism of immunity against viruses, they are not considered restriction enzymes.
To learn more about the Cas9 gene,
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Answer:
B.
Explanation:
Keeping and understanding food safety knowlege prevents the consumer from getting sick.
Answer:
Out crossing
Explanation:
By breeding a certain breed of chicken with a different kind of chicken may produce different sized eggs and avoid the possibility of inbreeding depression
Answer: Growing season is short because of it's cold climate.
Explanation:
Tundra is an area of the Earth that has no trees and the climate is cold and windy. There is little rainfall and it is found in top mountains and artic region. The growing season in tundra is very short, usually between 6 to 10 weeks. The temperature is low and cold because there are permafrost that are under the ground, evaporation of water is low because of low temperature.
Answer:
Astronomers can use telescopes to look at very distant galaxies. This is how they see what the Universe looked like a long time ago. This is because the light from distant parts of the Universe takes a very long time to reach us. From these observations, it seems the physical laws and constants of the Universe have not changed.
Physicists are currently unsure if anything existed before the Big Bang. They are also unsure whether the size of the Universe is infinite.
