You set up a mapping cross involving your favorite gene (YFG) in Neurospora and determine the following octad types: 4:4 arrangement 83; 2:4:2 arrangement 7; 2:2:2:2 arrangement 10. What is the distance between your gene and the centromere?

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#Question id: 27905

#Research Methodology

Every research project should make a contribution:

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#Question id: 15658

#SCPH06 I Botany

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium.

Next, you isolate a third mutant, MelC–, which gives constitutive melibiase expression. The MelC– mutation is closely linked to Mel1 and MelB–. Genetic tests of the MelC– mutation yield the following:

 

As above, classify the MelC– mutation in terms of its basic genetic properties and explain how you arrived at your conclusions.

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#Question id: 3675

#SCPH01 Biochemistry

Which describes the role of primase during replication?

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#Question id: 1639

#SCPH05 I Biotechnology

T-cell surface receptors for antigen partly recognize:

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#Question id: 19514

#SCPH05 I Biotechnology

A cathode and an anode are the most common components of an electrochemical cell. Which of the following claims about the cathode is correct?