Question

explain DNA replication ​

Answer 1

Explanation:

In molecular biology, DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule. DNA replication occurs in all living organisms acting as the most essential part for biological inheritance

Answer 2

What is DNA replication?

• ᴅɴᴀ ʀᴇᴘʟɪᴄᴀᴛɪᴏɴ ɪꜱ ᴛʜᴇ ᴘʀᴏᴄᴇꜱꜱ ʙʏ ᴡʜɪᴄʜ ᴅɴᴀ ᴍᴀᴋᴇꜱ ᴀ ᴄᴏᴘʏ ᴏꜰ ɪᴛꜱᴇʟꜰ ᴅᴜʀɪɴɢ ᴄᴇʟʟ ᴅɪᴠɪꜱɪᴏɴ.

The steps are :-

1. ᴛʜᴇ ꜰɪʀꜱᴛ ꜱᴛᴇᴘ ɪɴ ᴅɴᴀ ʀᴇᴘʟɪᴄᴀᴛɪᴏɴ ɪꜱ ᴛᴏ ‘ᴜɴᴢɪᴘ’ ᴛʜᴇ ᴅᴏᴜʙʟᴇ ʜᴇʟɪx ꜱᴛʀᴜᴄᴛᴜʀᴇ ᴏꜰ ᴛʜᴇ ᴅɴᴀ ᴍᴏʟᴇᴄᴜʟᴇ.
2. ᴛʜɪꜱ ɪꜱ ᴄᴀʀʀɪᴇᴅ ᴏᴜᴛ ʙʏ ᴀɴ ᴇɴᴢʏᴍᴇ? ᴄᴀʟʟᴇᴅ ʜᴇʟɪᴄᴀꜱᴇ ᴡʜɪᴄʜ ʙʀᴇᴀᴋꜱ ᴛʜᴇ ʜʏᴅʀᴏɢᴇɴ ʙᴏɴᴅꜱ? ʜᴏʟᴅɪɴɢ ᴛʜᴇ ᴄᴏᴍᴘʟᴇᴍᴇɴᴛᴀʀʏ? ʙᴀꜱᴇꜱ? ᴏꜰ ᴅɴᴀ ᴛᴏɢᴇᴛʜᴇʀ (ᴀ ᴡɪᴛʜ ᴛ, ᴄ ᴡɪᴛʜ ɢ).
3. ᴛʜᴇ ꜱᴇᴘᴀʀᴀᴛɪᴏɴ ᴏꜰ ᴛʜᴇ ᴛᴡᴏ ꜱɪɴɢʟᴇ ꜱᴛʀᴀɴᴅꜱ ᴏꜰ ᴅɴᴀ ᴄʀᴇᴀᴛᴇꜱ ᴀ ‘ʏ’ ꜱʜᴀᴘᴇ ᴄᴀʟʟᴇᴅ ᴀ ʀᴇᴘʟɪᴄᴀᴛɪᴏɴ ‘ꜰᴏʀᴋ’. ᴛʜᴇ ᴛᴡᴏ ꜱᴇᴘᴀʀᴀᴛᴇᴅ ꜱᴛʀᴀɴᴅꜱ ᴡɪʟʟ ᴀᴄᴛ ᴀꜱ ᴛᴇᴍᴘʟᴀᴛᴇꜱ ꜰᴏʀ ᴍᴀᴋɪɴɢ ᴛʜᴇ ɴᴇᴡ ꜱᴛʀᴀɴᴅꜱ ᴏꜰ ᴅɴᴀ.
4. ᴏɴᴇ ᴏꜰ ᴛʜᴇ ꜱᴛʀᴀɴᴅꜱ ɪꜱ ᴏʀɪᴇɴᴛᴇᴅ ɪɴ ᴛʜᴇ 3’ ᴛᴏ 5’ ᴅɪʀᴇᴄᴛɪᴏɴ (ᴛᴏᴡᴀʀᴅꜱ ᴛʜᴇ ʀᴇᴘʟɪᴄᴀᴛɪᴏɴ ꜰᴏʀᴋ), ᴛʜɪꜱ ɪꜱ ᴛʜᴇ ʟᴇᴀᴅɪɴɢ ꜱᴛʀᴀɴᴅ?. ᴛʜᴇ ᴏᴛʜᴇʀ ꜱᴛʀᴀɴᴅ ɪꜱ ᴏʀɪᴇɴᴛᴇᴅ ɪɴ ᴛʜᴇ 5’ ᴛᴏ 3’ ᴅɪʀᴇᴄᴛɪᴏɴ (ᴀᴡᴀʏ ꜰʀᴏᴍ ᴛʜᴇ ʀᴇᴘʟɪᴄᴀᴛɪᴏɴ ꜰᴏʀᴋ), ᴛʜɪꜱ ɪꜱ ᴛʜᴇ ʟᴀɢɢɪɴɢ ꜱᴛʀᴀɴᴅ?. ᴀꜱ ᴀ ʀᴇꜱᴜʟᴛ ᴏꜰ ᴛʜᴇɪʀ ᴅɪꜰꜰᴇʀᴇɴᴛ ᴏʀɪᴇɴᴛᴀᴛɪᴏɴꜱ, ᴛʜᴇ ᴛᴡᴏ ꜱᴛʀᴀɴᴅꜱ ᴀʀᴇ ʀᴇᴘʟɪᴄᴀᴛᴇᴅ ᴅɪꜰꜰᴇʀᴇɴᴛʟʏ:
5. ɪʟʟᴜꜱᴛʀᴀᴛɪᴏɴ ꜱʜᴏᴡɪɴɢ ʀᴇᴘʟɪᴄᴀᴛɪᴏɴ ᴏꜰ ᴛʜᴇ ʟᴇᴀᴅɪɴɢ ᴀɴᴅ ʟᴀɢɢɪɴɢ ꜱᴛʀᴀɴᴅꜱ ᴏꜰ ᴅɴᴀ.

Ⓗⓞⓟⓔ ⓘⓣ ⓗⓔⓛⓟⓢ ⓨⓞⓤ^_^