Q: Explain tobacco mosaic virus (TMV)
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TMV was first reported by Robert Mayer and it contains RNA as a genetic material . And this genetic material s surrounded by 2130 smaller unit which helps in protecting the elongated RNA .
All the capsomers arrange in a specific manner which gives a definite structure when caspid surrounded RNA and each capsomers made up of amino acid .
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Tᴏʙᴀᴄᴄᴏ ᴍᴏsᴀɪᴄ ᴠɪʀᴜs ʀᴇᴄᴇɪᴠᴇᴅ ɪᴛs ɴᴀᴍᴇ ʙᴇᴄᴀᴜsᴇ ᴛʜᴇ ᴘʟᴀɴᴛs ᴛʜᴀᴛ ɪᴛ ɪɴғᴇᴄᴛs ᴏғᴛᴇɴ sʜᴏᴡ ᴘᴀᴛᴄʜʏ ᴅɪsᴄᴏʟᴏʀᴀᴛɪᴏɴ﹐ ɢɪᴠɪɴɢ ᴛʜᴇᴍ ᴀ ᴍᴏsᴀɪᴄ﹣ʟɪᴋᴇ ᴀᴘᴘᴇᴀʀᴀɴᴄᴇ. Tʜɪs ᴠɪʀᴀʟ ᴠɪʟʟᴀɪɴ ɪs ʙᴀᴅ ɴᴇᴡs ғᴏʀ ʏᴏᴜʀ ɢʀᴇᴇɴ ᴘʟᴀɴᴛ ғʀɪᴇɴᴅs. Iғ ʏᴏᴜ ʜᴀᴠᴇɴ·ᴛ ɢᴜᴇssᴇᴅ ʙʏ ɪᴛs ɴᴀᴍᴇ﹐ ɪᴛ ᴏʙᴠɪᴏᴜsʟʏ ɪɴғᴇᴄᴛs ᴛᴏʙᴀᴄᴄᴏ ᴘʟᴀɴᴛs﹐ ʙᴜᴛ ɪᴛ ᴄᴀɴ ɪɴғᴇᴄᴛ ᴍᴀɴʏ ᴏᴛʜᴇʀ ᴘʟᴀɴᴛ sᴘᴇᴄɪᴇs ᴀs ᴡᴇʟʟ.
Sᴛʀᴜᴄᴛᴜʀᴇ﹕
Tʜᴇ sᴛʀᴜᴄᴛᴜʀᴇ ᴏғ ᴛᴏʙᴀᴄᴄᴏ ᴍᴏsᴀɪᴄ ᴠɪʀᴜs ɪs ɪᴍᴘᴏssɪʙʟᴇ ᴛᴏ sᴇᴇ ᴡɪᴛʜ ᴛʜᴇ ʜᴜᴍᴀɴ ᴇʏᴇ ʙᴇᴄᴀᴜsᴇ ɪᴛ ɪs ᴠᴇʀʏ sᴍᴀʟʟ ﹣ ᴀᴘᴘʀᴏxɪᴍᴀᴛᴇʟʏ 300 ɴᴀɴᴏᴍᴇᴛᴇʀs ʟᴏɴɢ. Tʜɪs ᴍᴇᴀɴs ᴛʜᴀᴛ 3,000 ᴛɪɴʏ ᴠɪʀᴜsᴇs ᴡᴏᴜʟᴅ ғɪᴛ ɪɴ ᴀ sɪɴɢʟᴇ ᴍɪʟʟɪᴍᴇᴛᴇʀ.
Tʜᴇ ʙᴀsɪᴄ ᴍᴀᴋᴇᴜᴘ ᴏғ ᴀʟʟ ᴠɪʀᴜsᴇs ɪs ᴘʀᴇᴛᴛʏ ᴍᴜᴄʜ ᴛʜᴇ sᴀᴍᴇ. Fɪʀsᴛ﹐ ᴛʜᴇʏ ᴀʟʟ ᴄᴏɴᴛᴀɪɴ ᴀ ɢᴇɴᴏᴍᴇ﹐ ᴡʜɪᴄʜ ᴄᴀʀʀɪᴇs ᴛʜᴇɪʀ ɢᴇɴᴇᴛɪᴄ ʙʟᴜᴇᴘʀɪɴᴛ. Oғ ᴄᴏᴜʀsᴇ﹐ ᴡᴇ ʜᴜᴍᴀɴs ʜᴀᴠᴇ ᴀ ɢᴇɴᴏᴍᴇ ᴛᴏᴏ﹐ ʙᴜᴛ ᴏᴜʀs ɪs ᴛʜᴇ ʀᴇᴄɪᴘᴇ ғᴏʀ ᴍᴀᴋɪɴɢ ᴀ ʜᴜᴍᴀɴ﹐ ᴀɴᴅ ᴀ ᴠɪʀᴜs· ɢᴇɴᴏᴍᴇ ɪs ᴛʜᴇ ʀᴇᴄɪᴘᴇ ғᴏʀ ᴍᴀᴋɪɴɢ ᴀ ᴠɪʀᴜs.
Tᴏʙᴀᴄᴄᴏ ᴍᴏsᴀɪᴄ ᴠɪʀᴜs· ɢᴇɴᴏᴍᴇ ɪs ᴅɪғғᴇʀᴇɴᴛ ғʀᴏᴍ ᴏᴜʀs ɪɴ ᴏᴛʜᴇʀ ᴡᴀʏs﹐ ᴛᴏᴏ. Hᴜᴍᴀɴs ʜᴀᴠᴇ ᴀ ɢᴇɴᴏᴍᴇ ᴍᴀᴅᴇ ғʀᴏᴍ ᴀ ᴍᴏʟᴇᴄᴜʟᴇ ᴄᴀʟʟᴇᴅ DNA﹐ ʙᴜᴛ ᴛᴏʙᴀᴄᴄᴏ ᴍᴏsᴀɪᴄ ᴠɪʀᴜs· ɢᴇɴᴏᴍᴇ ɪs ᴍᴀᴅᴇ ғʀᴏᴍ DNA·s ᴄᴏᴜsɪɴ﹐ ᴀ ᴍᴏʟᴇᴄᴜʟᴇ ᴄᴀʟʟᴇᴅ RNA. Tʜᴇ ʜᴜᴍᴀɴ ɢᴇɴᴏᴍᴇ ɪs ᴀʟsᴏ sᴘʟɪᴛ ɪɴᴛᴏ ᴍᴀɴʏ ᴄʜᴜɴᴋs ᴄᴀʟʟᴇᴅ ᴄʜʀᴏᴍᴏsᴏᴍᴇs. Hᴏᴡᴇᴠᴇʀ﹐ ᴛᴏʙᴀᴄᴄᴏ ᴍᴏsᴀɪᴄ ᴠɪʀᴜs ʜᴀs ᴀ ɢᴇɴᴏᴍᴇ ᴛʜᴀᴛ ɪs ᴀᴛᴛᴀᴄʜᴇᴅ ᴛᴏɢᴇᴛʜᴇʀ ɪɴ ᴏɴᴇ sᴛʀᴀɴᴅ.
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Sᴛʀᴜᴄᴛᴜʀᴇ﹕
Tʜᴇ sᴛʀᴜᴄᴛᴜʀᴇ ᴏғ ᴛᴏʙᴀᴄᴄᴏ ᴍᴏsᴀɪᴄ ᴠɪʀᴜs ɪs ɪᴍᴘᴏssɪʙʟᴇ ᴛᴏ sᴇᴇ ᴡɪᴛʜ ᴛʜᴇ ʜᴜᴍᴀɴ ᴇʏᴇ ʙᴇᴄᴀᴜsᴇ ɪᴛ ɪs ᴠᴇʀʏ sᴍᴀʟʟ ﹣ ᴀᴘᴘʀᴏxɪᴍᴀᴛᴇʟʏ 300 ɴᴀɴᴏᴍᴇᴛᴇʀs ʟᴏɴɢ. Tʜɪs ᴍᴇᴀɴs ᴛʜᴀᴛ 3,000 ᴛɪɴʏ ᴠɪʀᴜsᴇs ᴡᴏᴜʟᴅ ғɪᴛ ɪɴ ᴀ sɪɴɢʟᴇ ᴍɪʟʟɪᴍᴇᴛᴇʀ.
Tʜᴇ ʙᴀsɪᴄ ᴍᴀᴋᴇᴜᴘ ᴏғ ᴀʟʟ ᴠɪʀᴜsᴇs ɪs ᴘʀᴇᴛᴛʏ ᴍᴜᴄʜ ᴛʜᴇ sᴀᴍᴇ. Fɪʀsᴛ﹐ ᴛʜᴇʏ ᴀʟʟ ᴄᴏɴᴛᴀɪɴ ᴀ ɢᴇɴᴏᴍᴇ﹐ ᴡʜɪᴄʜ ᴄᴀʀʀɪᴇs ᴛʜᴇɪʀ ɢᴇɴᴇᴛɪᴄ ʙʟᴜᴇᴘʀɪɴᴛ. Oғ ᴄᴏᴜʀsᴇ﹐ ᴡᴇ ʜᴜᴍᴀɴs ʜᴀᴠᴇ ᴀ ɢᴇɴᴏᴍᴇ ᴛᴏᴏ﹐ ʙᴜᴛ ᴏᴜʀs ɪs ᴛʜᴇ ʀᴇᴄɪᴘᴇ ғᴏʀ ᴍᴀᴋɪɴɢ ᴀ ʜᴜᴍᴀɴ﹐ ᴀɴᴅ ᴀ ᴠɪʀᴜs· ɢᴇɴᴏᴍᴇ ɪs ᴛʜᴇ ʀᴇᴄɪᴘᴇ ғᴏʀ ᴍᴀᴋɪɴɢ ᴀ ᴠɪʀᴜs.
Tᴏʙᴀᴄᴄᴏ ᴍᴏsᴀɪᴄ ᴠɪʀᴜs· ɢᴇɴᴏᴍᴇ ɪs ᴅɪғғᴇʀᴇɴᴛ ғʀᴏᴍ ᴏᴜʀs ɪɴ ᴏᴛʜᴇʀ ᴡᴀʏs﹐ ᴛᴏᴏ. Hᴜᴍᴀɴs ʜᴀᴠᴇ ᴀ ɢᴇɴᴏᴍᴇ ᴍᴀᴅᴇ ғʀᴏᴍ ᴀ ᴍᴏʟᴇᴄᴜʟᴇ ᴄᴀʟʟᴇᴅ DNA﹐ ʙᴜᴛ ᴛᴏʙᴀᴄᴄᴏ ᴍᴏsᴀɪᴄ ᴠɪʀᴜs· ɢᴇɴᴏᴍᴇ ɪs ᴍᴀᴅᴇ ғʀᴏᴍ DNA·s ᴄᴏᴜsɪɴ﹐ ᴀ ᴍᴏʟᴇᴄᴜʟᴇ ᴄᴀʟʟᴇᴅ RNA. Tʜᴇ ʜᴜᴍᴀɴ ɢᴇɴᴏᴍᴇ ɪs ᴀʟsᴏ sᴘʟɪᴛ ɪɴᴛᴏ ᴍᴀɴʏ ᴄʜᴜɴᴋs ᴄᴀʟʟᴇᴅ ᴄʜʀᴏᴍᴏsᴏᴍᴇs. Hᴏᴡᴇᴠᴇʀ﹐ ᴛᴏʙᴀᴄᴄᴏ ᴍᴏsᴀɪᴄ ᴠɪʀᴜs ʜᴀs ᴀ ɢᴇɴᴏᴍᴇ ᴛʜᴀᴛ ɪs ᴀᴛᴛᴀᴄʜᴇᴅ ᴛᴏɢᴇᴛʜᴇʀ ɪɴ ᴏɴᴇ sᴛʀᴀɴᴅ.
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