The key event in controlling replication is the behavior of the ORC complex at the origin.

Cdc6 protein is an unstable protein that is synthesized only in G1.

Cdc6 binds to ORC and allows MCM proteins.

Cdc6 binds to ORC and allows MCM proteins to bind.

Cdt1 facilitates MCM loading on origins

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#Unit 10. Ecological Principles

Clement’s organismic model- Competition causes sharp boundaries between groups of species; certain species group together.

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#Id: 5757

#Unit 10. Ecological Principles

Gleason’s individualistic model- Competition does not cause sharp boundaries; different species do not group together due to physical variables.

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#Unit 10. Ecological Principles

Principle of species individuality

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#Unit 10. Ecological Principles

Species richness- which is a count of the number of species.

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#Id: 5760

#Unit 10. Ecological Principles

One major problem is that this approach does not take species frequency of occurrence or relative abundance into account.

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#Id: 5761

#Unit 10. Ecological Principles

Berger-Parker index- Dominance indices are weighted toward the abundance of the commonest or dominant species

D_BP= N_max/N