Sentences with phrase «eukaryotic organisms»
The phrase "eukaryotic organisms" refers to living things that have cells with a clearly defined nucleus. These organisms, like plants and animals, are more complex than simpler organisms like bacteria, as their cells have specialized compartments that carry out specific functions. Full definition
But until now, prions were only seen in the cells of eukaryotic organisms, a group that includes animals, plants and fungi.
scientificamerican.com
The random BAC fingerprinting technique has rapidly become the method of choice for mapping and sequencing the comparatively large genomes of other eukaryotic organisms, including humans.
Adding or subtracting methyl to cytosine in eukaryotic organisms modifies gene expression, while the base sequence remains unchanged.
The genus Cryptosporidium, a group of single - celled eukaryotic organisms in the phylum Apicomplexa, comprises an unknown number of species infecting numerous vertebrate species.
Large multicellular eukaryotic organisms became common much later, about 600 million years ago, near the transition to the Phanerozoic Era, the «time of visible life.»
«It would be incredibly difficult to demonstrate this for free - living eukaryotic organisms, like humans,» Brisson said.
Such series of cell fate transitions of stem cells ultimately lead to the development of a higher eukaryotic organism.
Ciliates are water - living unicellular eukaryotic organisms, characterized by the presence of hair - like organelles called cilia.
The vaccine triggers a mechanism known as RNA interference, which is an innate defence mechanism of plants, animals and other eukaryotic organisms against pathogens.
In fact, as with eukaryotic organisms, division of Caulobacter cells generates two different daughter cells, which can be easily separated.
Contained within all eukaryotic cells, mitochondria possess their own DNA due to their evolutionary history as an «enslaved» bacterium swallowed up billions of years ago by a primitive eukaryotic organism.
The work was carried out on a model eukaryotic organism, the yeast Saccharomyces.
«The goal of the work was really to develop a genome - scale engineering tool for yeast... traditional metabolic engineering focused on just a few genes and the few existing genome - scale engineering tools are only applicable to bacteria, not eukaryotic organisms like yeast,» said Steven L. Miller Chair of Chemical and Biomolecular Engineering Huimin Zhao, who led the study.
Comparisons of the cytoskeleton and endocytic trafficking systems with those of humans and other eukaryotic organisms reveal major differences.
The study provides new insights in how eukaryotic organisms gradually evolved from simpler microbial ancestors.
The starting point of my new interest were two fundamental questions: Why do eukaryotic organisms invest that much energy into synthetizing a dazzling array of lipids, when only one lipid is sufficient to form a functional membrane bilayer?
Unlike typical eukaryotic organisms, Tetrahymena has two nuclei — a micronucleus that contains normal chromosomes and a macronucleus whose chromosomes are fragmented into thousands of small pieces of DNA that all encode the same ribosomal RNA gene.
In this interval we start having fossil evidence of eukaryotic organisms — things with a cell nucleus, like us.
Our transgenic plants are one of the first examples of detector plants and a fully synthetic signaling pathway in a higher eukaryotic organism.
Ciliates are water - living unicellular eukaryotic organisms, characterized by the presence of hair - like -LSB-...]
A Snowball to Acidic Hothouse swing would have greatly added to already high evolutionary pressures from anaerobic extinctions through genetic isolation of selective survival adaptations and may have led singled - celled eukaryotic organisms to cooperate together physically and form the first multi-cellular lifeforms.
The team's work highlights this by presenting a comprehensive view of genome evolution on many different levels (e.g., differences in ploidy, aneuploidy, genetic variants, hybridization, and introgressions) that is difficult to obtain at the same scale and accuracy for other eukaryotic organisms.
The synthetic yeast chromosome marks the first step toward synthesizing a eukaryotic organism.
A fungus (plural fungi) is a eukaryotic organism that digests its food externally and absorbs the nutrient molecules into its cells.
It is the first synthetic chromosome ever assembled from a eukaryotic organism, the type in which cells store DNA in nuclei.
If sulfide - rich subsurface waters posed a continuing challenge to eukaryotic organisms, the shift to iron - rich subsurface waters would have removed this challenge.
«We suggest that oxygen was much lower than previously thought during this important middle chapter in Earth history, which likely explains the low abundances and diversity of eukaryotic organisms and the absence of animals,» Lyons said.
The latter are the bacteria that eventually gave rise to eukaryotic organisms, including humans.
Molecular fossils (steranes) of biological lipids (fats from cell membranes) characteristic of eukaryotic organisms that were probably still singled - celled were thought to have been found preserved in 2.7 - billion - year - old shales from the Pilbara Craton, Australia.
That fact that mitochondria have their own DNA, RNA, and ribosomes, supports the endosymbiosis theory, as does the existence of the amoeba, a eukaryotic organism that lacks mitochondria and therefore requires a symbiotic relationship with an aerobic bacterium.
His findings suggest that eukaryotic organisms were present on Earth as early as 2.31 billion years ago, around the same time that oxygen was first present in the Earth's atmosphere.
«I have a eukaryotic organism active in my gut that could potentially become an issue.
In this series the artist creates meticulous simulacra of botanical species and eukaryotic organisms.
From seed and spore dispersal, to rapid cell growth of eukaryotic organisms, and the pulsing cilia needed to sustain them, to the slow growth of lichens and moss - life has a remarkable way of establishing itself on the planet; yet, most of these processes go unseen to the human eye.