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ololo11 [35]
4 years ago
12

Why do we celebrate Earth Day? Need an answer today.

Biology
2 answers:
kenny6666 [7]4 years ago
8 0
Hey user!

your answer is here...

Earth day is celebrated on April 22 every year. it was first celebrated in 1970. it is celebrated to raise awareness for environmental protection and to take care of our planet ( earth ).

cheers!!
dlinn [17]4 years ago
6 0

Hello

here's your answer

______________________

Earth day is celebrated to raise awareness about the protection of the earth.

___________________

Thanks

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Answers:

  1. The sequence encodes a gene that is critical for life and cannot be easily mutated while retaining function.
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1- Explanation:

6.8 million years is a considerable period of time and if the cats were evolved in two different specie then technically they should have substantially different sequences of gene. However, there are some genes that are critical for the survival of the organisms because they encode a function which is equally important for the organisms of a certain category, even if they are different specie.

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2- Explanation:

A retro virus inserts itself in to the genome of host organisms and become a part of them. It is very difficult to detect the presence of the retro virus until the organism undergoes infection due to its attack. Cats are a favorable host for retroviruses - called lentiviruses which attack the cats to cause a critical syndrome Feline Immunodeficiency Virus or FIV. Therefore, it is possible that same retrovirus having a particular sequence has attacked both cats and the sequences were taken from those cats.

Hope it help!

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