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Similarity in Biological Definition

Genomics

... 2 Comparative genomics 3 Genetic similarity 4 See also 5 Sources and external links ... the origin of these organelles . Genetic similarity It is often stated that a particular organism ... the two species. Here is a list of genetic similarity to humans, with sources, where known. While ...

BLAST

... sequences in the human genome that resemble the mouse gene based on similarity of sequence. BLAST is one of the most widely used bioinformatics ... server, hosted by the NCBI , allows anyone with a web browser to perform similarity searches against constantly updated databases of proteins and DNA that ...

Flagellum

... to allow this. Many components of bacterial flagella share sequence similarity to components of the type III secretion systems , but the components of ... some components of archaeal flagella share sequence and morphological similarity with components of type IV pili , which are assembled through the action ...

Apoptosis

... programmed cell death helped convince researchers that the function of Bcl-2 was to antagonize the cell death process. I also believe that this similarity made the worm cell-death pathway suddenly a topic of major interest in the biomedical community, as this pathway was no longer simply an abstract ...

Biology

... descended from a common origin through a process of evolution . Indeed, it is one of the reasons that biological organism exhibit the striking similarity of units and processes discussed in the previous section. Charles Darwin established evolution as a viable theory by articulating its driving ...

Common descent

... ). He was led to this conclusion by the universality of the genetic code (see below). Evidence for common descent Universality and similarity The universality of the genetic code is generally regarded by biologists as definitive evidence in favor of the theory of universal common ...

Cytoskeleton

... found in prokaryotes . Although the evolutionary relationships are so distant that they are not obvious from protein sequence comparisons alone, the similarity of their three-dimensional structures provides strong evidence that the eukaryotic and prokaryotic cytoskeletons are truly homologous. FtsZ ...

Endosymbiotic theory

... them than to each other. This suggests that if chloroplasts originated as part of the cell, they did so multiple times, in which case their close similarity to each other is difficult to explain. The size of both organelles is comparable to bacteria. These organelle's ribosomes are like those ...

Evolution

... evidence Comparison of the genetic sequence of organisms reveals that organisms that are phylogenetically close have a higher degree of sequence similarity than organisms that are phylogenetically distant. For example, neutral human DNA sequences are approximately 1.2% divergent (based on substitutions) ...

Parthenogenesis

... which may have both benefits and costs, is that offspring are typically genetically identical or nearly identical to their parent. This genetic similarity can be beneficial if the genotype is well suited to a stable environment, but disadvantageous if the environment is changing. For example, if a new ...

Turgor

... where M is the molarity R is the molar gas constant T is absolute temperature (i.e. measured in kelvin ). Note the similarity of the above formula to the ideal gas law . See also Pfeffer cell cell wall ...
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