repeated

Y chromosome

...romosome exchanges genes between the two copies of repeated sequences that lie near to each other as mirror im...ll scale over long evolutionary timescales between repeated sequences on the same chromosome, but not at the dramatic frequency apparently employed by the Y chr...

Replication

...this page. In statistics replication refers to repeated measurement of a phenomenon, so that the variability can be estimated. In science , this is a synonym for Reproducibility ....

Repeated sequence (DNA)

... sequences, one can distinguish two main types of repeated sequence : Tandem repeats : Satellite DNA , Minisatellite , Microsatellite ; Interspersed repeats : SINE ( S hort IN terspersed E lements), LINE ( L ong IN terspersed E lements)....

Primer

...nucleotide to each chain. After that, the cycle is repeated for each nucleotide in the primer. This is a simplified description, the actual process is quite complicated. For that reason, most laboratories do not make primers themselves, but order them by specialized companies. DNA sequencing is used to deter...

Polysaccharide

...pure cellulose. Cellulose is a polymer made with repeated glucose units bonded together by beta- linkages. Humans and many other animals lack an enzyme to break the beta- linkages, so they do not digest cellulose. Certain animals can digest cellulose, because bacteria possesing the enzyme are present in...

Photosynthesis

...enhousz , court physician to the Austrian Empress, repeated Priestley's experiments. He discovered that it was the influence of sun and light on the plant that could cause it to rescue a mouse in a matter of hours. In 1796 , Jean Senebier , a French pastor, showed that CO 2 was the "fixed" or "injured" ai...

Polymerase chain reaction

...which DNA could be artificially multiplied through repeated cycles of duplication driven by an enzyme called...eat at 72C for 45 seconds. Step 5 Steps 2-4 are repeated 25 times, but with good primers and fresh polymerase, 15 to 20 cycles is sufficient. Step 6 Hold ...

Microsatellite

...nce (a Tandemly Repetitive DNA sequence) that is repeated many times within the genome of an organism.Many...rated at the same locus. In a microsatellite, the repeated sequence is very simple, consisting of two to four nucleotides, and can be repeated 10 to 100 times....

Long-term potentiation

...ntiation in the CA1 region of hippocampus requires repeated tetanization". Learn Mem 1 (1), 74-82. ^ Kojima N, Wang J, Mansuy IM, Grant SG, Mayford M, Kandel ER (1997) "Rescuing impairment of long-term potentiation in fyn-deficient mice by introducing Fyn transgene". Proc Natl Acad Sci U S A ...

Photosynthesis

...enhousz , court physician to the Austrian Empress, repeated Priestley's experiments. He discovered that it was the influence of sun and light on the plant that could cause it to rescue a mouse in a matter of hours. In 1796 , Jean Senebier , a French pastor, showed that CO 2 was the "fixed" or "injured" ai...

Diabetes mellitus

...rederick Grant Banting and Charles Herbert Best repeated the work of Von Mering and Minkowski but went a step further and managed to show that they could reverse the induced diabetes in dogs by giving them an extract from the pancreatic islets of Langerhans of healthy dogs 8 . They went on to isolate the...

Charles Darwin

...ontinued in London over the autumn and he suffered repeated bouts of illness, then on 11 November he returned and proposed to Emma. Again he discussed his ideas, and she subsequently wrote beseeching him to read from the Gospel of St. John "our Saviour's farewell discourse to his disciples" , a section on ...

Anatomy

... rest. Topographical anatomy must be learned by repeated dissection and inspection of dead human bodies. It is no more a science than a pilot's knowledge is, and, like that knowledge, must be exact and available in moments of emergency. From the morphological point of view, however, human anatomy is a...