Kinetochores assemble on regions of chromosomal DNA marked by a centromere-specific H3 histone variant called CENP-A.

TLS Online TPP Program

#Id: 8140

#Section 3: Genetics, Cellular and Molecular Biology

Anterograde transport

COPII vesicles = ER to Golgi

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#Id: 10352

#Section 2: General Biology

B-cell activation

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#Id: 8958

#Section 3: Genetics, Cellular and Molecular Biology

Genetic exchange also happens between distantly related organisms by horizontal gene transfer, or HGT.

HGT is particularly important to prokarytotes and is the most common way by which they acquire new genes.

TLS Online TPP Program

#Id: 8331

#Section 3: Genetics, Cellular and Molecular Biology

Cytochalasin D, 

a fungal alkaloid, depolymerizes actin filaments by binding to the (+) end of F-actin.

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#Id: 8644

#Section 3: Genetics, Cellular and Molecular Biology

Phosphorylation on multiple sites by G1 CDKs blocks Rb from associating with E2F and promotes its export out of the nucleus.