in E. coli, GreA and GreB enable the polymerase to cleave a few ribonucleotides from the 3’ terminus of the RNA product, thereby allowing the catalytic site of RNA polymerase to be realigned with the 3’–OH to release stalled polymerase

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#Id: 6970

#Unit 8. Inheritance Biology

Aneuploidy can arise in several ways

Chromosome may be lost during mitosis or meiosis.

The small chromosome generated by a Robertsonian translocation may be lost in mitosis or meiosis.

Aneuploidy may arise through nondisjunction.

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#Id: 8109

#Unit 1. Molecules and their Interaction Relevant to Biology

TLS Online TPP Program

#Id: 4618

#Unit 13. Methods in Biology

 If the antibody preparation is polyclonal and has a range of affinities, Scatchard plot yields a curved line whose slope is constantly changing. The average affinity constant K0 can be calculated by determining the value of Ka when half of the binding sites are occupied (i.e., when r  1 in this example). In this graph, antiserum #3 has a higher affinity (K0  2.4  108) than antiserum #4 (K0  1.25  108)

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#Id: 4798

#Unit 13. Methods in Biology

Mean deviation: It is the mean of the absolute values of the numerical differences between the numbers of a set and their mean or median.

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#Id: 719

#Unit 3. Fundamental Processes

A genome in a bacterial cell has a single replication origin and thus constitutes a single replicon.