Question

prepare a short note on the contribution of TH morgon in genetics​

Answer 1

$\huge\bold\red{ANSWER}$

He formulated the chromosomal theory of linkage. He defined linkage as the co-existence of two or more genes in the same chromosome and performed dihybrid crosses in Drosophila to show that linked genes are inherited together and are located on X-chromosome.

Answer 2

➜ ʜᴇ ғᴏʀᴍᴜʟᴀᴛᴇᴅ ᴛʜᴇ ᴄʜʀᴏᴍᴏsᴏᴍᴀʟ ᴛʜᴇᴏʀʏ ᴏғ ʟɪɴᴋᴀɢᴇ. ʜᴇ ᴅᴇғɪɴᴇᴅ ʟɪɴᴋᴀɢᴇ ᴀs ᴛʜᴇ ᴄᴏ-ᴇxɪsᴛᴇɴᴄᴇ ᴏғ ᴛᴡᴏ ᴏʀ ᴍᴏʀᴇ ɢᴇɴᴇs ɪɴ ᴛʜᴇ sᴀᴍᴇ ᴄʜʀᴏᴍᴏsᴏᴍᴇ ᴀɴᴅ ᴘᴇʀғᴏʀᴍᴇᴅ ᴅɪʜʏʙʀɪᴅ ᴄʀᴏssᴇs ɪɴ ᴅʀᴏsᴏᴘʜɪʟᴀ ᴛᴏ sʜᴏᴡ ᴛʜᴀᴛ ʟɪɴᴋᴇᴅ ɢᴇɴᴇs ᴀʀᴇ ɪɴʜᴇʀɪᴛᴇᴅ ᴛᴏɢᴇᴛʜᴇʀ ᴀɴᴅ ᴀʀᴇ ʟᴏᴄᴀᴛᴇᴅ ᴏɴ x-ᴄʜʀᴏᴍᴏsᴏᴍᴇ.

➜, , ᴘᴀsᴀᴅᴇɴᴀ, ᴄᴀʟɪғ.), ᴀᴍᴇʀɪᴄᴀɴ ᴢᴏᴏʟᴏɢɪsᴛ ᴀɴᴅ ɢᴇɴᴇᴛɪᴄɪsᴛ, ғᴀᴍᴏᴜs ғᴏʀ ʜɪs ᴇxᴘᴇʀɪᴍᴇɴᴛᴀʟ ʀᴇsᴇᴀʀᴄʜ ᴡɪᴛʜ ᴛʜᴇ ғʀᴜɪᴛ ғʟʏ (ᴅʀᴏsᴏᴘʜɪʟᴀ) ʙʏ ᴡʜɪᴄʜ ʜᴇ ᴇsᴛᴀʙʟɪsʜᴇᴅ ᴛʜᴇ ᴄʜʀᴏᴍᴏsᴏᴍᴇ ᴛʜᴇᴏʀʏ ᴏғ ʜᴇʀᴇᴅɪᴛʏ. ʜᴇ sʜᴏᴡᴇᴅ ᴛʜᴀᴛ ɢᴇɴᴇs ᴀʀᴇ ʟɪɴᴋᴇᴅ ɪɴ ᴀ sᴇʀɪᴇs ᴏɴ ᴄʜʀᴏᴍᴏsᴏᴍᴇs ᴀɴᴅ ᴀʀᴇ ʀᴇsᴘᴏɴsɪʙʟᴇ ғᴏʀ ɪᴅᴇɴᴛɪғɪᴀʙʟᴇ, ʜᴇʀᴇᴅɪᴛᴀʀʏ ᴛʀᴀɪᴛs.

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