Sigma inhibits non specific binding of holoenzyme so fourth slides rapidly over non promoters sequences but binding strongly to promoters

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#Unit 7. System Physiology – Animal

Phase 2 (plateau), calcium channels open and fast potassium channels close

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#Unit 8. Inheritance Biology

COMPONENTS OF GENETIC VARIANCE

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#Unit 2. Cellular Organization

The ATPase domains interact with the proteins

Scc1 and Scc3, which together form a cohesin ring structure which embrace one or both copies of the replicated DNA.

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#Unit 2. Cellular Organization

Mutations occur at the same rate in both exons and introns, but exon mutations are eliminated more effectively by selection.

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#Unit 3. Fundamental Processes

From the speed of replication, it is evident that a mammalian genome could be replicated in 1 hour if all replicons functioned simultaneously. S phase actually lasts for 6 hours in a typical somatic cell, though, which implies that no more than 15% of the replicons are likely to be active at any given moment.