mtDNA replication and segregation to daughter mitochondria is stochastic.

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#Id: 3863

#Unit 5. Developmental Biology

Ammonia inhibits PKA by indirectly activating cAMP hydrolysis via DhkC-RdeA mediated phosphorylation of RegA.

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#Id: 6652

#Unit 8. Inheritance Biology

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#Id: 6872

#Unit 3. Fundamental Processes

RNA-induced silencing complex (RISC/RITS) remodeling complexes to chromatin to form heterochromatin in telomeres.

The siRNA complex promotes methylation of histone H3K9 by the Clr4 methyltransferase (also known as KMT1, a homolog of Drosophila Su[Var]3–9). H3K9 methylation recruits the S. pombe homolog of HP1, Swi6.

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#Unit 2. Cellular Organization

Complexity (denoted by N) is the number of base pairs of unique or nonrepeating DNA in a given segment of DNA

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#Id: 5183

#Unit 7. System Physiology – Animal

The vasoconstriction is due to serotonin, histamines & other vasoconstrictors liberated from platelets that adhere to the walls of the damaged vessels.