lineage

Species

...is a group of organisms that shares an ancestor; a lineage that maintains its integrity with respect to other...ry species concept. Both agree that a species is a lineage that maintains its integrity over time, that is diagnosably different to other lineages (else we cou...

Alga

...found among the green algae (see Charales ), in a lineage that eventually led to the higher land plants. The point where these non-algal plants begin and algae stop is usually taken to be the presence of reproductive organs with protective cell layers, a characteristic not found in the other algal groups. ...

Parthenogenesis

...lves produce offspring. This means that an asexual lineage will have roughly double the rate of population gr...is particularly defenseless against it, an asexual lineage is more likely to be completely wiped out by it. In contrast, a lineage that reproduces sexually ha...

Human

...n 1 per cent. It has been estimated that the human lineage diverged from that of chimpanzees about five milli...ears old already showing a divergence from the ape lineage suggests an earlier divergence. Human evolution is characterized by a number of important trends ...

HeLa

...and have been grown in cell culture in an unbroken lineage ever since. This cell line was propagated for use in cancer research .Initially, the cell line was said to be named after a "Helen Lane", in order to preserve Lacks's anonymity. The cells proliferate abnormally rapidly, even compared to other cance...

Evolution

...Fossils have been used to determine at what time a lineage developed, and can be used to demonstrate the continuity between two different lineages through transitional fossils . Paleontologists investigate evolution largely through analysis of fossils. Phylogeny , the study of the ancestry of species,...

Endosymbiont

...balli (Echinodermata: Ophiuroidea) represent a new lineage of extracellular marine symbionts in the alpha subdivision of the class Proteobacteria. Burnett, W J and J D McKenzie http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=168468&rendertype=abstract Symbiodinium dinoflagellate endosym...

Endosymbiont

...balli (Echinodermata: Ophiuroidea) represent a new lineage of extracellular marine symbionts in the alpha subdivision of the class Proteobacteria. Burnett, W J and J D McKenzie http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=168468&rendertype=abstract Symbiodinium dinoflagellate endosym...

Cryptozoology

... off the coast of Africa . Of an even older lineage than the coelacanth are the Graptolites . Living representatives were first found in 1882 , although the group had previously been presumed to have been extinct for 300 million years. Cryptozoologists point these out to demonstrate that there are m...

BLAST

...erial species have a protein that is related in lineage to a certain protein whose amino-acid sequence I know? Where does the DNA that I've just sequenced come from? What other genes encode proteins that exhibit structures or motifs such as the one I've just determined? BLAST is also often as pa...

Bone

... of bone. Bone Lining Cells (BLCs) share a common lineage with osteogenesis (bone forming) cells. They function as a barrier for certain ions, induced osteogenetic cells. They are flattened, mononucleate cells which line bone Osteocytes originate from osteoblasts which have migrated into and become trapp...

Apoptosis

...in the development of the nervous system, but cell lineage and differentiation inevitably led to the study of cell fate: "One aspect of the cell lineage particularly caught my attention: in addition to the 959 cells generated during worm development and...

Alga

...found among the green algae (see Charales ), in a lineage that eventually led to the higher land plants. The point where these non-algal plants begin and algae stop is usually taken to be the presence of reproductive organs with protective cell layers, a characteristic not found in the other algal groups. ...