Chromosomes occupy chromosome territories in the nucleus and are not entangled with each other.

Heterochromatic regions, silenced genes, and gene-sparse regions of chromosomes are typically localized to the nuclear periphery.

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#Id: 4551

#Unit 12. Applied Biology

Gardasil is an HPV vaccine that protects against infection by human papillomavirus (HPV). This vaccine is highly protective against viral infection, including genital warts and cervical, vulvar, and vaginal cancers caused by HPVs.

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#Id: 9262

#Unit 6. System Physiology – Plant

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#Id: 1349

#Unit 4. Cell Communication and Cell Signaling

RAF (also known as MAPKKK),  A ser/thr protein kinase

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#Id: 1704

#Unit 4. Cell Communication and Cell Signaling

Neutrophils- First cell against infection

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#Id: 8954

#Unit 11. Evolution and Behavior

As a chromosome with a new gene duplicate spreads through a population, there is polymorphism in the number of copies of the gene that individuals carry. This situation, called copy number variation.