Three different DNA polymerases make up the eukaryotic replication fork

Pol α/rimase is responsible for primer synthesis on the lagging strand.

The MCM helicase (the eukaryotic homolog of Dna B ) unwinds the dsDNA, while 

PCNA (homolog of ex) endows the complex with processivity.

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#Id: 9549

#Unit 11. Evolution and Behavior

Darwin’s evolutionary theory 

Evolution as such is the simple proposition that the characteristics of organisms change over time. 

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#Unit 11. Evolution and Behavior

Postulate of Darwin

Geometric increase 

Limited food & Space

Struggle for existence 

Variation 

 Natural selection

Inheritance of useful characters

Speciation

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#Id: 9551

#Unit 11. Evolution and Behavior

Darwin’s evolutionary theory - Common descent

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#Id: 9552

#Unit 11. Evolution and Behavior

Gradualism is Darwin’s proposition that the differences between even radically different organisms have evolved by small steps through intermediate forms, not by leaps

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#Unit 11. Evolution and Behavior

Natural selection was Darwin’s brilliant hypothesis, that accounts for adaptations, features that appear “designed” to fit organisms to their environment.

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#Id: 9554

#Unit 11. Evolution and Behavior

Alfred Russel Wallace - Who was collecting specimens in the Malay Archipelago, had independently conceived of natural selection