What is double helix dna
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ʜɪ ᴍᴀᴛᴇ ʜᴇʀᴇ's ᴜʀ ᴀɴsᴡᴇʀ
ɪɴ ᴍᴏʟᴇᴄᴜʟᴀʀ ʙɪᴏʟᴏɢʏ, ᴛʜᴇ ᴛᴇʀᴍ ᴅᴏᴜʙʟᴇ ʜᴇʟɪx ʀᴇғᴇʀs ᴛᴏ ᴛʜᴇ sᴛʀᴜᴄᴛᴜʀᴇ ғᴏʀᴍᴇᴅ ʙʏ ᴅᴏᴜʙʟᴇ-sᴛʀᴀɴᴅᴇᴅ ᴍᴏʟᴇᴄᴜʟᴇs ᴏғ ɴᴜᴄʟᴇɪᴄ ᴀᴄɪᴅs sᴜᴄʜ ᴀs ᴅɴᴀ. ᴛʜᴇ ᴅᴏᴜʙʟᴇ ʜᴇʟɪᴄᴀʟ sᴛʀᴜᴄᴛᴜʀᴇ ᴏғ ᴀ ɴᴜᴄʟᴇɪᴄ ᴀᴄɪᴅ ᴄᴏᴍᴘʟᴇx ᴀʀɪsᴇs ᴀs ᴀ ᴄᴏɴsᴇϙᴜᴇɴᴄᴇ ᴏғ ɪᴛs sᴇᴄᴏɴᴅᴀʀʏ sᴛʀᴜᴄᴛᴜʀᴇ, ᴀɴᴅ ɪs ᴀ ғᴜɴᴅᴀᴍᴇɴᴛᴀʟ ᴄᴏᴍᴘᴏɴᴇɴᴛ ɪɴ ᴅᴇᴛᴇʀᴍɪɴɪɴɢ ɪᴛs ᴛᴇʀᴛɪᴀʀʏ sᴛʀᴜᴄᴛᴜʀᴇ...
ᴅᴏᴜʙʟᴇ ʜᴇʟɪx ɪs ᴛʜᴇ ᴅᴇsᴄʀɪᴘᴛɪᴏɴ ᴏғ ᴛʜᴇ sᴛʀᴜᴄᴛᴜʀᴇ ᴏғ ᴀ ᴅɴᴀ ᴍᴏʟᴇᴄᴜʟᴇ. ᴀ ᴅɴᴀ ᴍᴏʟᴇᴄᴜʟᴇ ᴄᴏɴsɪsᴛs ᴏғ ᴛᴡᴏ sᴛʀᴀɴᴅs ᴛʜᴀᴛ ᴡɪɴᴅ ᴀʀᴏᴜɴᴅ ᴇᴀᴄʜ ᴏᴛʜᴇʀ ʟɪᴋᴇ ᴀ ᴛᴡɪsᴛᴇᴅ ʟᴀᴅᴅᴇʀ. ᴇᴀᴄʜ sᴛʀᴀɴᴅ ʜᴀs ᴀ ʙᴀᴄᴋʙᴏɴᴇ ᴍᴀᴅᴇ ᴏғ ᴀʟᴛᴇʀɴᴀᴛɪɴɢ ɢʀᴏᴜᴘs ᴏғ sᴜɢᴀʀ (ᴅᴇᴏxʏʀɪʙᴏsᴇ) ᴀɴᴅ ᴘʜᴏsᴘʜᴀᴛᴇ ɢʀᴏᴜᴘs.
ᴛʜᴇ sᴛʀᴜᴄᴛᴜʀᴇ ᴏғ ᴅɴᴀ ɪs ᴄᴀʟʟᴇᴅ ᴀ ᴅᴏᴜʙʟᴇ ʜᴇʟɪx, ᴡʜɪᴄʜ ʟᴏᴏᴋs ʟɪᴋᴇ ᴀ ᴛᴡɪsᴛᴇᴅ sᴛᴀɪʀᴄᴀsᴇ. ᴛʜᴇ sᴜɢᴀʀ ᴀɴᴅ ᴘʜᴏsᴘʜᴀᴛᴇ ᴍᴀᴋᴇ ᴜᴘ ᴛʜᴇ ʙᴀᴄᴋʙᴏɴᴇ, ᴡʜɪʟᴇ ᴛʜᴇ ɴɪᴛʀᴏɢᴇɴ ʙᴀsᴇs ᴀʀᴇ ғᴏᴜɴᴅ ɪɴ ᴛʜᴇ ᴄᴇɴᴛᴇʀ ᴀɴᴅ ʜᴏʟᴅ ᴛʜᴇ ᴛᴡᴏ sᴛʀᴀɴᴅs ᴛᴏɢᴇᴛʜᴇʀ.
ᴇᴀᴄʜ ᴍᴏʟᴇᴄᴜʟᴇ ᴏғ ᴅɴᴀ ɪs ᴀ ᴅᴏᴜʙʟᴇ ʜᴇʟɪx ғᴏʀᴍᴇᴅ ғʀᴏᴍ ᴛᴡᴏ ᴄᴏᴍᴘʟᴇᴍᴇɴᴛᴀʀʏ sᴛʀᴀɴᴅs ᴏғ ɴᴜᴄʟᴇᴏᴛɪᴅᴇs ʜᴇʟᴅ ᴛᴏɢᴇᴛʜᴇʀ ʙʏ ʜʏᴅʀᴏɢᴇɴ ʙᴏɴᴅs ʙᴇᴛᴡᴇᴇɴ ɢ-ᴄ ᴀɴᴅ ᴀ-ᴛ ʙᴀsᴇ ᴘᴀɪʀs. ᴅᴜᴘʟɪᴄᴀᴛɪᴏɴ ᴏғ ᴛʜᴇ ɢᴇɴᴇᴛɪᴄ ɪɴғᴏʀᴍᴀᴛɪᴏɴ ᴏᴄᴄᴜʀs ʙʏ ᴛʜᴇ ᴜsᴇ ᴏғ ᴏɴᴇ ᴅɴᴀ sᴛʀᴀɴᴅ ᴀs ᴀ ᴛᴇᴍᴘʟᴀᴛᴇ ғᴏʀ ғᴏʀᴍᴀᴛɪᴏɴ ᴏғ ᴀ ᴄᴏᴍᴘʟᴇᴍᴇɴᴛᴀʀʏ sᴛʀᴀɴᴅ.
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ᴘʟᴢᴢ ᴍᴀʀᴋ ᴀs ʙʀᴀɪɴʟɪᴇsᴛ..!!..