linkstream2 microblog

QT:{{”
Witch’s broom can be caused by cytokinin, a phytohormone, interfering with an auxin-regulated bud. In normal plant function, an auxin would keep the secondary, tertiary, and so on tips from overgrowing, but cytokinin can sometimes interfere with this control, causing these apices to grow into witch’s brooms.

Witch’s broom may be caused by many different types of organisms, including fungi, oomycetes, insects, mistletoe, dwarf mistletoes, mites, nematodes, phytoplasmas, or viruses.[4] The broom growths may last for many years, typically for the life of the host plant. Human activity is sometimes behind the introduction of these organisms, for example, by failing to observe hygienic practice and thereby infecting the tree with the causative organism, or by pruning a tree improperly, and thereby weakening it.
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Doesn’t seem to be related to somatic mosaicism
https://en.wikipedia.org/wiki/Witch%27s_broom

https://www.economist.com/briefing/2019/10/05/the-stockmarket-is-now-run-by-computers-algorithms-and-passive-managers

QT:{{”
More than a century ago, the lines of Blaschko were first described by German dermatologist Alfred Blaschko, based on the observation of patterned skin lesions that were linear on the extremities, S-shaped on the anterior trunk, and V-shaped on the back
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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC526027/

QT:{{”
Tetragametic chimerism is a form of congenital chimerism. This condition occurs through the fertilisation of two separate ova by two sperm, followed by aggregation of the two at the blastocyst or zygote stages. This results in the development of an organism with
intermingled cell lines. Put another way, the chimera is formed from the merging of two nonidentical twins (a similar merging presumably occurs with identical twins, but as their genotypes are not
significantly distinct, the resulting individual would not be considered a chimera). As such, they can be male, female, or have mixed intersex characteristics.
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https://en.wikipedia.org/wiki/Chimera_(genetics)

https://en.wikipedia.org/wiki/Freemartin

https://www.aai.org/About/History/Notable-Members/Nobel-Laureates/PeterMedawar

Ray D. Owen 1915–2014 | Nature Immunology

https://www.nature.com/articles/ni.3033

https://your.yale.edu/research-support/office-sponsored-projects/resources/frequently-needed-yale-facts
67.5% indirect rate

https://en.wikipedia.org/wiki/Against_the_Wind_(Bob_Seger_song)

https://www.bufalinact.com/