How Humans Lost Their Tails [perhaps of interest to Russophiles/phobes and others]

Image from article, with caption:  Most living primates, such as lemurs and almost all monkeys, including the Geoffroy’s spider monkey, pictured, still have tails  Credit...Nick Fox/Alamy

By Carl Zimmer, The New York Times, Published Sept. 21, 2021 Updated Sept. 22, 2021; see also 

Excerpt: 

TBXT was one of the first genes uncovered by scientists nearly a century ago. At the time, many researchers searched for genes by zapping animals, plants or microbes with X-rays, hoping that mutations would create a visible change. 

In 1923, the Russian geneticist Nadezhda Dobrovolskaya-Zavadskaya X-rayed male mice and then allowed them to breed. She found that a few of them gained a mutation that caused some of their descendants to grow kinked or shortened tails. Subsequent experiments revealed that the mutation was on the TBXT gene.

***

See: V. Korzh, "N. Dobrovolskaya-Zavadskaya and the Discovery of the T gene1," Published 2004  History  Medicine Russian Journal of Developmental Biology SEMANTIC SCHOLAR

Dobrovolskaya-Zavadskaya image from

Nadezhda Alexandrovna Dobrovolskaya-Zavadskaya was born in Kiev on September 13, 1878. She studied medicine in Saint Petersburg where in the early 1900s, Dobrovolskaya became one of the best known women surgeons. After the First World War started in 1914, she joined the Russian army and worked in military hospitals until 1917, when the revolution dramatically changed the fate of Russia and all Russians. At the end of civil war she was working in the hospital in the army of General Wrangel. After the defeat of Wrangel in 1920, Dobrovolskaya left Russia and went into exile. Like many other Russian emigr[symbol: see text]s, she came to Paris after fleeing Crimea via Turkey and Egypt. (Unfortunately, this period of the life of Nadezhda Dobrovolskaya is completely unknown to me.)
***

From: 

Добровольская-Завадская, Надежда Алексеевна


Материал из Википедии — свободной энциклопедии

Comments

  1. shakistoSeptember 26, 2021 at 8:12 PM

    These mice were x-rayed by humans and then some of their descendants lost their tails. Maybe millions of years ago humans or pre-humans, or their ancestors with tails, were similarly x-rayed by extraterrestrials, also causing their descendants to lose their tails.

    This sounds plausible to me, although I doubt the extraterrestrials would have left any fossil evidence that would allow somebody to prove it.

    ReplyDelete

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