A spirogram indicating changes in lung volume under different conditions of breathing.

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#Id: 610

#Unit 2. Cellular Organization

Trp operon is negatively regulated by two ways

1. Repression

2. Attenuation

Why is this extra control of two layers on trp operon needed? 

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#Id: 2743

#Unit 13. Methods in Biology

Polymorphism is produced due to the complementary sequence for the primer used being

present in one strain (strain A) but not in the other (strain B). As a result, an amplification product will be detectable as a band in strain A, while strain B will not show the product.

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#Id: 9463

#Unit 4. Cell Communication and Cell Signaling

SH2 domain (Src homology 2 domain) 

homology with a region in the Src cytosolic tyrosine kinase encoded by the src gene.

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#Id: 7025

#Unit 5. Developmental Biology

Unpaired protein activates the JAK-STAT pathway in the adjacent germ stem cells to specify their self-renewal

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#Id: 10379

#Unit 4. Cell Communication and Cell Signaling