Cellular senescence may have evolved to protect organisms against cancer. Instead of dividing out of control, the cells die. Cellular senescence appears to be regulated by several tumor suppressor genes, especially p53.what is the most appropriate reason behind this,

1) Transcription factor p53 is thought to suppress tumorigenesis by causing cell arrest and senescence in response to short telomeres, DNA damage, and viral or external signals to divide

2) This factor can stop the cell cycle, cause cellular senescence in rapidly dividing cells, instruct genes to initiate cellular apoptosis, and activate DNA repair enzymes.

3) Induction of apoptosis or cellular senescence by p53 always beneficial.

TLS Online TPP Program

#Question id: 20413

#Unit 3. Fundamental Processes

Positive selection such as Mutations conferring antibiotic resistance in bacteria or venom-resistance of pray is example of 

TLS Online TPP Program

#Question id: 20412

#Unit 3. Fundamental Processes

Mutations conferring antibiotic resistance in bacteria or venom-resistance of pray is example of 

TLS Online TPP Program

#Question id: 20411

#Unit 3. Fundamental Processes

In intron mutations are expected to be selectively neutral except

TLS Online TPP Program

#Question id: 20409

#Unit 3. Fundamental Processes

Introns may more freely accumulate point substitutions and other changes due to 

TLS Online TPP Program

#Question id: 20407

#Unit 3. Fundamental Processes

The same sequence of DNA encodes two nonhomologous proteins because it uses more than one reading frame are called as

TLS Online TPP Program

#Question id: 20406

#Unit 3. Fundamental Processes

Choose the correct statement