When the Ca2+ levels drop:

Myosin LC is dephosphorylated by MLC phosphatase, causing muscle relaxation.

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#Id: 8216

#Section 3: Genetics, Cellular and Molecular Biology

In nonselective autophagy, a bulk portion of cytoplasm is sequestered in autophagosomes

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#Id: 8027

#Section 2: General Biology

UV absorption

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#Id: 8983

#Section 3: Genetics, Cellular and Molecular Biology

Which is a group of interbreeding, sexually reproducing individuals that have a common set of genes—the gene pool. 

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#Id: 7744

#Section 2: General Biology

An ionic radius is one-half the distance between the nuclei of two ions in an ionic bond.

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#Id: 8962

#Section 3: Genetics, Cellular and Molecular Biology

Fate of duplicate gene