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USPshnik [31]
3 years ago
9

If only a single member of a pair of chromosomes is present in a cell, it is a _____ condition and is most likely a _____ cell.

Biology
1 answer:
lions [1.4K]3 years ago
8 0
The second blank is "mutated"
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Answer :Erwin Chargaff   a Biochemist

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He formulated the base paring of double helix of DNA. He reasoned that since the percentage of four  DNA  bases are of this proportions in human;

                                  Adenine=30.9% and Thymine =29.4%;

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Then,  the amount of adenine will always be equal to thymine,

And the amount of Guanine equals to cytosine based on this percentages of distribution.  

(Adenine and Guanine are large, molecule of Purines, while thymine and Cytosine are Pyrimidine)  

 

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His second rule is that the DNA composition, in the relative amount of the four bases Adenine, Thymine, Cytosine and Guanine varies in proportion from one organisms to another. And this is the basis of molecular diversity.

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