Interphase chromatin remain attached to nuclear wall proteins via matrix attachment regions (MARs) or matrix attachment DNA sequences

TLS Online TPP Program

#Id: 10465

#Unit 4. Cell Communication and Cell Signaling

A classic inherited cancer syndrome is retinoblastoma, which is caused by loss of function of RB.

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#Id: 5629

#Unit 7. System Physiology – Animal

The sensory receptors for vision are photoreceptors, located on the retina.

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#Id: 3183

#Unit 3. Fundamental Processes

The assignment of mitochondria to daughter cells at mitosis also appears to be random. Indeed, it was the observation of somatic variation in plants that first suggested the existence

of genes that could be lost from one of the daughter cells because they were not inherited according to Mendel's laws.

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#Id: 5714

#Unit 7. System Physiology – Animal

Somatostatin binds membrane receptor, which is coupled to Galpha i protein.

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#Id: 3405

#Unit 3. Fundamental Processes

SOS response in E. coli: 

The LexA protein is the repressor in this system, which has an operator site near each gene. Because the RecA gene is not entirely repressed by the LexA repressor, the normal cell contains about 1,000 RecA monomers.