Stimulation of b-galactosidase synthesis by cAMP with wild-type and mutant CAP.

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#Id: 2388

#Unit 3. Fundamental Processes

Specific exonic and intronic sequences can enhance or suppress splice site selection.

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#Id: 5909

#Unit 3. Fundamental Processes

A common feature of all DNA polymerases is that they cannot initiate synthesis of a chain of DNA de novo, but can only elongate a chain.

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#Id: 443

#Unit 2. Cellular Organization

Individual nucleosomes can be obtained by treating chromatin with the endonuclease micrococcal nuclease (MNase), which cuts the DNA at linker DNA.

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#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: 4736

#Unit 5. Developmental Biology

The zygote of C. elegans exhibits rotational holoblastic cleavage.