Each cardiac cycle is initiated by spontaneous generation of an action potential in the sinus node.

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#Id: 579

#Unit 2. Cellular Organization

“Cryptic mutants” of lac operon make b-galactosidase but still could not grow on lactose means they are essentially Y-

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#Id: 7410

#Unit 5. Developmental Biology

Once wingless and engrailed expression patterns are established in adjacent cells, this pattern must be maintained to retain the parasegmental periodicity of the body plan.

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#Id: 620

#Unit 2. Cellular Organization

At high or low trp concentration, RNA Polymerase synthesizes full mRNA till region 4

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#Id: 1970

#Unit 10. Ecological Principles

This mortality rate allows us to determine whether mortality increases with age, decreases with age, or is independent of age

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#Id: 552

#Unit 2. Cellular Organization

Volutin is an inclusion body represents Ppi reserve  used in the synthesis of ATP.