Question

Embryos of Deuterostomes are called "regulative embryos". Justify the statement.

#Quality answer is expected...​

Answer 1

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➳ ᴅᴜᴇᴛᴇʀᴏsᴛᴏᴍᴇs ᴀʀᴇ ᴛʜᴇ ᴍᴇᴍʙᴇʀs ᴏғ ᴛʜᴇ ᴘʜʏʟᴀ (ᴄʜᴏʀᴅᴀᴛᴀ, ʜᴇᴍɪᴄʜᴏʀᴅᴀᴛᴀ, ᴇᴄʜɪɴᴏᴅᴇʀᴍᴀᴛᴀ, ᴄʜᴀᴇᴛᴏɢɴᴀᴛʜᴀ) ɪɴ ᴡʜɪᴄʜ ᴛʜᴇ ᴀɴᴜs ᴀᴘᴘᴇᴀʀs ғɪʀsᴛ, ᴅᴇᴠᴇʟᴏᴘɪɴɢ ᴀᴛ ᴏʀ ɴᴇᴀʀ ᴛʜᴇ ʙʟᴀsᴛᴏᴘᴏʀᴇ.

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➳ ᴄʟᴇᴀᴠᴀɢᴇ ɪɴ ᴛʜᴇsᴇ ᴏʀɢᴀɴɪsᴍs ɪs ʀᴀᴅɪᴀʟ ᴀɴᴅ ɪɴᴅᴇᴛᴇʀᴍɪɴᴀᴛᴇ, ᴀɴᴅ ᴛʜᴇ ᴍᴇsᴏᴅᴇʀᴍ ᴀɴᴅ ᴄᴏᴇʟᴏᴍ ғᴏʀᴍ ғʀᴏᴍ ᴏᴜᴛɢʀᴏᴡᴛʜs ᴏғ ᴛʜᴇ ᴘʀɪᴍɪᴛɪᴠᴇ ɢᴜᴛ.

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➳ sᴜᴄʜ ᴄʟᴇᴀᴠᴀɢᴇ ʟᴇᴀᴅs ᴛᴏ ᴛʜᴇ ғᴏʀᴍᴀᴛɪᴏɴ ᴏғ "ʀᴇɢᴜʟᴀᴛɪᴠᴇ ᴇᴍʙʀʏᴏ".

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➳ ᴛʜᴇ ᴄᴇʟʟ-ᴄᴇʟʟ sɪɢɴᴀʟɪɴɢ ɪɴᴛᴇʀᴀᴄᴛɪᴏɴs ɪɴ ᴀ sᴘᴇᴄɪғɪᴄ ᴀʀᴇᴀ ᴏғ ᴛʜᴇ ᴇᴍʙʀʏᴏ ᴛʜᴀᴛ ʟᴇᴀᴅ ᴛᴏ ᴛʜᴇ ᴄᴏɴᴅɪᴛɪᴏɴᴀʟ sᴘᴇᴄɪғɪᴄᴀᴛɪᴏɴ ᴏғ ᴀ ᴄᴇʟʟ's ғᴀᴛᴇ

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➳ ɪғ ʙʟᴀsᴛᴏᴍᴇʀᴇs ᴀʀᴇ sᴇᴘᴀʀᴀᴛᴇᴅ ᴀᴛ 4 ᴄᴇʟʟ sᴛᴀɢᴇ, ᴇᴀᴄʜ ᴏɴᴇ ᴡɪʟʟ ᴅᴇᴠᴇʟᴏᴘ ɪɴᴛᴏ ᴀ ᴄᴏᴍᴘʟᴇᴛᴇ ɪɴᴅɪᴠɪᴅᴜᴀʟ.

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