#genome

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Well interesting, of the Durotriges people:

'In southern Britain, the Late Iron Age Durotriges tribe often buried women with substantial grave goods. Here we analyse 57 ancient genomes from Durotrigian burial sites and find an extended kin group centred around a single maternal lineage, with unrelated (presumably inward migrating) burials being predominantly male. Such a matrilocal pattern is undescribed in European prehistory, but when we compare mitochondrial haplotype variation among European archaeological sites spanning six millennia, British Iron Age cemeteries stand out as having marked reductions in diversity'

https://www.nature.com/articles/s41586-024-08409-6

reviewed Biocode by Dawn Field

Dawn Field, Neil Davies: Biocode 3 stars

A Recovering Software Engineer's Review

2 stars

0.1 Introduction to Biocode

Biocode, by Field and Davies, might better be structured in two parts. Its first four chapters present the reader with what may be termed a minimal bootstrapping into the world of genetics in a broad sense. The second four chapters detail the scaling opportunities for genetic technology, showcasing how such technologies have insights to offer from the microbial world all the way to the entire planet.

The first part provides the reader with a layman’s introduction to genetic technology in its first chapter, “DNA,” a non-critical overview of real and potential commercial uses in its second chapter, “Personal Genomics,” a poor attempt to prod the ethics of the field in its third chapter, “Homo Evolutis,” and an incomplete treatment of bioinformatics in its fourth chapter, “Zoo in My Sequencer.” As evidenced by this author’s choice of adjectives, I find this part of the book deficient. The …

and with bigger genomes grow less efficiently—new research helps explain why they never died out https://phys.org/news/2024-11-animals-bigger-genomes-efficiently-died.html

Bigger provide environment-dependent growth benefits in : Kimberley Simpson et al. https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.20150

"while small species performed better in most environmental conditions, there were two situations where having a larger genome seemed to offer advantages"

The world's largest animal genome https://phys.org/news/2024-08-international-team-sequence-world-largest.html

The genomes of all lungfish inform on genome expansion and tetrapod https://www.nature.com/articles/s41586-024-07830-1

With over 90 gigabases, the DNA of the South American is the largest of all and more than twice as large as the genome of the previous record holder, the Australian . 18 of the 19 chromosomes are each individually larger than the entire human .

Brooding found to have massive due to duplication of chromosomes
https://phys.org/news/2024-08-brooding-brittle-star-massive-genome.html

Genetic variation in the brooding brittle-star: a global hybrid polyploid complex? https://royalsocietypublishing.org/doi/10.1098/rsos.240428

The researchers wondered about the factors that led to its adaptability to so many different marine environments... it has a massive genome—one so large and varied that the team found it difficult to describe the brittle star as a single species.

How duplicated helped grasses diversify and thrive https://phys.org/news/2024-08-duplicated-genomes-grasses-diversify.html

Phylogenomic profiles of whole-genome duplications in and landscape of differential duplicate retention and losses https://www.nature.com/articles/s41467-024-47428-9

cover about 40% of the Earth's land surface, thriving in a multitude of environments. The evolutionary success of this plant family, which includes rice, maize, wheat and bamboo, likely results from a history of whole- duplications.

Last surviving woolly were inbred but not doomed to extinction https://phys.org/news/2024-06-surviving-woolly-mammoths-inbred-doomed.html

Temporal dynamics of woolly erosion prior to : Marianne Dehasque et al. https://www.cell.com/cell/fulltext/S0092-8674(24)00577-4

"The last population of mammoths was isolated on off the coast of 10,000 years ago, when sea levels rose and cut the mountainous island off from the mainland... they originated from at most 8 individuals but grew to 200–300 within 20 generations."

Bonnet have expanded to make them more adaptable to multiple lifestyles https://phys.org/news/2024-06-bonnet-mushrooms-genomes-multiple-lifestyles.html

Extreme overall expansion in s.s. irrespective of plant hosts or substrate specializations https://www.cell.com/cell-genomics/fulltext/S2666-979X(24)00170-8

"Mycena have simply used every possible known trick from the playbook to expand their genomes and apparently for multiple different purposes that are not obviously connected to their known, supposedly preferred lifestyle"

As chilling as it is informative: In a paper published on Wednesday in the journal Nature, an international cohort of researchers revealed that the children — sacrificial victims killed between 500 and 900 A.D. — were all local Maya boys that may have been specifically selected to be killed in sibling pairs. https://www.nytimes.com/2024/06/12/science/archaeology-maya-genetics.html?unlocked_article_code=1.zU0.2Qqs.BQyQjLVv4VYt&smid=url-share