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harina [27]
3 years ago
14

Why were the first living things on Earth only anaerobic bacteria?

Biology
1 answer:
schepotkina [342]3 years ago
6 0
Maybe because they like coacervates.
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Different forms of a given gene are known as
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Answer: alleles

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Alleles are different forms of a given gene. Alleles are mutated forms of a given gene which controls a particular trait. For instance, the gene that codes for hemoglobin is denoted with the letter A but the gene has another variant denoted by S. In abnormal hemoglobin S (sickle hemoglobin), glutamate is replaced by valine at position 6 in the amino acid sequence of the two beta chains of hemoglobin. This change in the amino acid sequence causes the red blood cells to have a sickle shape resulting in sickle cell disease. Therefore hemoglobin A and S are alleles of a given gene.

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