speciation
One of Darwin’s theories is FINALLY proved? Jonathan Wells explains
NOW what? Another walking shark discovered in the tropics
At Nautilus: Do butterflies challenge the meaning of “species”?
Female fish mate OUTSIDE their species?
Spiky dino may upset species classifications
At Nature: Doubt and diversity are okay in science
Identical birds, different genes
Claim: Sexual selection could spark new species
More Salt in the Peppered Moth’s Wounds
The entire history of Kettlewell’s Peppered Moth experiment is littered with problems: doctored photographs, wrong assumptions and slim evidence, followed by genetic analysis revealing that the protein exons coding for color were not changed, but, rather, a transposon (non-random) was inserted in an intron (“junk DNA”). And now there’s this paper. It seems that the “Caterpillars of the peppered moth perceive color through their skin.” From the Abstract: We previously reported that slow colourchange in twig-mimicking caterpillars of the peppered moth (Biston betularia) is a response to achromatic and chromatic visual cues. Here we show that the perception of these cues, and the resulting phenotypic responses, does not require ocular vision. Caterpillars with completely obscured ocelli remained capable of enhancing Read More ›
How many “types of human” “coexisted with our ancestors”?
Why some biologists are beginning to question the “biological species concept”
First-ever natural narwhal-beluga hybrid found, has bizarre teeth
Claims for a new cat “species”
ID Breakthrough — Syn61 marks a live case of intelligent design of a life form
Let’s read the Nature abstract: Nature (2019) Article | Published: 15 May 2019 Total synthesis of Escherichia coli with a recoded genome Julius Fredens, Kaihang Wang, Daniel de la Torre, Louise F. H. Funke, Wesley E. Robertson, Yonka Christova, Tiongsun Chia, Wolfgang H. Schmied, Daniel L. Dunkelmann, Václav Beránek, Chayasith Uttamapinant, Andres Gonzalez Llamazares, Thomas S. Elliott & Jason W. Chin AbstractNature uses 64 codons to encode the synthesis of proteins from the genome, and chooses 1 sense codon—out of up to 6 synonyms—to encode each amino acid. Synonymous codon choice has diverse and important roles, and many synonymous substitutions are detrimental. Here we demonstrate that the number of codons used to encode the canonical amino acids can be reduced, Read More ›