The closed complex is converted into an open complex of 1.3 turns of the double helix in a series of steps by first “melting” a short region of DNA. 

This Isomerization is essentially irreversible and, once complete, typically guarantees that transcription will subsequently initiate.

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#Id: 9423

#Unit 11. Evolution and Behavior

Sexual dimorphism in primates

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#Id: 7096

#Unit 3. Fundamental Processes

Formylation is not strictly necessary because nonformylated Met-tRNAf can function as an initiator.

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#Id: 7263

#Unit 6. System Physiology – Plant

Form I is found in most autotrophic organisms. Contributing up to 50% of soluble leaf protein, it is the predominant protein in plant leaves.

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#Unit 6. System Physiology – Plant

Three major types of insect herbivores

Phloem feeders, such as aphids and whiteflies, cause little damage to the epidermis and mesophyll cells. Phloem feeders insert their narrow stylet, which is an elongated mouthpart, into the phloem sieve tubes of leaves and stems. 

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#Id: 7437

#Unit 5. Developmental Biology

The emerging column of cells topples over called ‘the slug’.