This 11-year-old girl inherited her genes almost entirely from one parent, her father

| | July 18, 2018

An 11-year-old girl from the Czech Republic was born with genes that came almost entirely from her father, instead of half from each parent.

Only about 25 people in the world — all girls — have been reported with this genetic syndrome, and the Czech girl appears to be the first to have inherited it without developing cancer.

When she was 9 years old, a genetic test revealed that she had two identical copies of a rare gene. At first, the scientists thought it was extremely bad luck, inheriting the same super-rare gene twice, once from each parent. But as it turned out, the rare gene was, “surprisingly, not in her mother,” wrote the scientific team.

Related article:  23andMe asked to help reunite families separated during immigration enforcement push

[S]he had inherited two copies of her father’s gene.

The girl is not quite a twin of her father, but what’s known as a genetic “mosaic,” showing variation in different tissues. Only about 7% of her blood cells, for example, showed any maternal genes. And 74% of the cells in her saliva held only paternal genes.

In the girl’s case, instead of the DNA from her father’s sperm and mother’s egg pairing [to make a zygote], two copies of the father’s genes zipped together to create a dad-dad set of 23 chromosomes, the full human genome.

Read full, original post: An 11-Year-Old Got Most Of Her Genes From Her Dad, And Almost None From Her Mom

The GLP aggregated and excerpted this article to reflect the diversity of news, opinion, and analysis. Click the link above to read the full, original article.

Leave a Comment

News on human & agricultural genetics and biotechnology delivered to your inbox.
Optional. Mail on special occasions.

Send this to a friend