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1.Both plant cells and nerve cells lack centrioles.Yet plant cells divide while NERVE CELLS DO NOT.Why?

2.What types of histones are present in one nucleosome complex?

Asked by pb_ckt 19th April 2019, 9:55 AM
Answered by Expert
Answer:

1. Nerve cells lack centriole and hence, they cannot undergo mitosis and divide to form new cells. Once neurons become fully mature, they do not move any further into the cell division cycle.

Plant cells lack centrioles, however, they are still able to form a mitotic spindle from the centrosome region of the cell just outside of the nuclear envelope. As a result, they are able to undergo mitosis and divide to form new cells.

2. The nucleosome complex consists of histones H2A, H2B, H3, and H4 which come together to form a histone octamer.

Answered by Expert 22nd April 2019, 12:44 PM
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