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ValentinkaMS [17]
3 years ago
13

g Use the information gathered in the Nature Article Expanding the Genetic Code in the Laboratory to answer the question. How ma

ny amino acids are currently known to be encoded by the standard genetic code in at least some organisms?
Biology
1 answer:
kherson [118]3 years ago
4 0

Answer: 20 amino acids

Explanation:

The triplet nature of the genetic code make for a possible 64 codons: 61 code for amino acids present in most polypeptide chains while the remaining 3 are special-sense codons, since they only signal for the termination of the polypeptide chain.

Thus, due to the degeneracy of the genetic code, the 64 codons code for 20 amino acids

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Domestic cats have 38 chromosomes in their diploid cells. If a diploid cat cell enters meiosis, how many chromosomes and double-
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Answer:

Meiosis is a reduction division of diploid cells.(2n) Chromosomes numbers are reduced with each successive division stages  of meiosis 1 and 2, to haploid(n).

Cats  have  38 diploid  somatic (body)chromosome (2n) in the somatic cells  and are reduced to 19  new   varied haploid cells (n) of chromosomes in the gametes.

In cats, as in other mammals, during spermatogenesis in (seminiferous tublule of testis) and oegensis(in the ovaries);<u>meiotic  reduction division</u> reduced the diploid  somatic chromosomes to haploid chromosomes  in  sex gametes.

Therefore 38 chromosomes will be in  the somatic chromosomes, while the sex gametes, with double-helical molecules of DNA, at the end of meiosis II will  have 19 chromosomes, half of the somatic chromosomes.

Explanation:

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3 years ago
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sertanlavr [38]

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3 years ago
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