Some elements exist naturally as molecules. For example, hydrogen and oxygen exist as two-atom molecules.

TLS Online TPP Program

#Id: 8890

#Section 3: Genetics, Cellular and Molecular Biology

Mitotic spindle attach to chromosomes via specialized protein structures known as kinetochores

TLS Online TPP Program

#Id: 8891

#Section 3: Genetics, Cellular and Molecular Biology

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

TLS Online TPP Program

#Id: 8892

#Section 3: Genetics, Cellular and Molecular Biology

Amphitelic attachment, 

sister kinetochores attach to microtubules emanating from opposite spindle poles, they are stably attached

TLS Online TPP Program

#Id: 8893

#Section 3: Genetics, Cellular and Molecular Biology

Merotelic attachment 

A kinetochore can attach to microtubules emanating from both poles at the same time

TLS Online TPP Program

#Id: 8894

#Section 3: Genetics, Cellular and Molecular Biology

Syntelic attachment 

Both kinetochores of a sister chromatid pair can attach to microtubules from the same pole

TLS Online TPP Program

#Id: 8895

#Section 3: Genetics, Cellular and Molecular Biology

Monotelic attachment 

only one kinetochore can attach to microtubules