Sentences with phrase «ancient organisms which»

Not exact matches

«Jellyfishes are ancient organisms, which use a primitive predation mechanism based on generating feeding currents to bring the prey into contact with their bodies,» Acuña explains.

One skeleton from Denmark (Jorgen 625) showed extraordinary preservation of the pathogen DNA, allowing a genome reconstruction without using a modern reference sequence, which was never done before for an ancient organism's genome.

Most biologists typically recognize three official branches of life: the eukaryotes, which are organisms whose cells have a nucleus; bacteria, the single - celled organisms that may or may not possess a nucleus; and archaea, an ancient line of microbes without nuclei that may make up as much as a third of all life on Earth (See «Will the Methane Bubble Burst?»

Support comes from data on a range of organisms, which show an inverse relationship between mutation rate and ancient population size.

But scientists suggested that unlike the oil on Earth today, which formed from dead organisms, the ancient oil could have formed through nonbiological processes.

Together with other international partners, Yakimov's team has already identified more than ten new lineages of bacteria and archaea (these are ancient bacteria - like organisms), which they have named the Mediterranean Sea Brine Lake Divisions.

Back in the wild and wacky 19th century, some scientists held a notion called recapitulation theory, which claimed embryonic development followed the branches of an organism's ancient evolutionary tree, from, say, fish to lizard to dog to human.