Src is a:

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#Question id: 7073

#Unit 5. Developmental Biology

The cell migrations that form the primitive streak thus appear to be regulated by:

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#Question id: 26970

#Unit 10. Ecological Principles

There are some given Density independent factors, except?

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#Question id: 2081

#Unit 2. Cellular Organization

The plasma membrane around a eukaryotic cell is composed of:

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#Question id: 15658

#Unit 13. Methods in Biology

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: 28373

#Unit 5. Developmental Biology

 A free Dorsal protein which are responsible for ventralization of the cell by moving into the nucleus, for these ventral cell fate running a cascade from Ventralizes vitelline membrane, in this cascade other such proteins are the part of ventral cell fate, except____