Segmental duplications have played an important role in the evolution of human chromosomes; about 4% of the human genome consists of segmental duplications. 

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#Id: 4566

#Unit 8. Inheritance Biology

DOMINANT EPISTASIS

In dominant epistasis, however, only a single copy of an allele is required to inhibit the expression of an allele at a different locus.

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#Unit 2. Cellular Organization

Ubiquitin-Protein Ligases-

APC/CCdc20 - Degradation of securin, initiating anaphase, Induces degradation of B-type cyclins

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#Id: 8182

#Unit 2. Cellular Organization

When excess H2O2 accumulates in the cell, catalase converts it to H2O through the reaction.

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#Id: 10544

#Unit 4. Cell Communication and Cell Signaling

Two BH3-only proteins, Puma and Noxa are transcriptionally induced by the p53 protein

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#Id: 1001

#Unit 5. Developmental Biology

Antennapedia(Antp), which is required for the identity of the second thoracic segment.