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 Post subject: Each sperm is unique
PostPosted: Mon Jun 13, 2016 4:12 pm 
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To conduct the research, Wang, Quake and Behr first isolated and sequenced nearly 100 sperm cells from the study subject, a 40-year-old man. The man has healthy offspring, and the semen sample appeared normal. His whole-genome sequence (obtained from diploid cells) has been previously sequenced to a high level of accuracy.

They then compared the sequence of the sperm with that of the study subject's diploid genome. They could see, by comparing the sequences of the chromosomes in the diploid cells with those in the haploid sperm cells, where each recombination event took place.
The researchers also identified 25 to 36 new single nucleotide mutations in each sperm cell that were not present in the subject's diploid genome. Such random mutations are another way to generate genetic variation


https://med.stanford.edu/news/all-news/ ... sperm.html

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In building a statue, a sculptor doesn't keep adding clay to his subject.He keeps chiseling away at the inessentials until the truth of its creation is revealed without obstructions. Perfection is not when there is no more to add,but no more to take away.


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