How developmental genes play role in evolution?

ᴇᴠᴏʟᴜᴛɪᴏɴ ɪꜱ ᴛʜᴇ ᴘʀᴏᴄᴇꜱꜱ ʙʏ ᴡʜɪᴄʜ ᴘᴏᴘᴜʟᴀᴛɪᴏɴꜱ ᴏꜰ ᴏʀɢᴀɴɪꜱᴍꜱ ᴄʜᴀɴɢᴇ ᴏᴠᴇʀ ɢᴇɴᴇʀᴀᴛɪᴏɴꜱ. ɢᴇɴᴇᴛɪᴄ ᴠᴀʀɪᴀᴛɪᴏɴꜱ ᴜɴᴅᴇʀʟɪᴇ ᴛʜᴇꜱᴇ ᴄʜᴀɴɢᴇꜱ. ... ɪꜰ ᴀ ᴛʀᴀɪᴛ ɪꜱ ᴀᴅᴠᴀɴᴛᴀɢᴇᴏᴜꜱ ᴀɴᴅ ʜᴇʟᴘꜱ ᴛʜᴇ ɪɴᴅɪᴠɪᴅᴜᴀʟ ꜱᴜʀᴠɪᴠᴇ ᴀɴᴅ ʀᴇᴘʀᴏᴅᴜᴄᴇ, ᴛʜᴇ ɢᴇɴᴇᴛɪᴄ ᴠᴀʀɪᴀᴛɪᴏɴ ɪꜱ ᴍᴏʀᴇ ʟɪᴋᴇʟʏ ᴛᴏ ʙᴇ ᴘᴀꜱꜱᴇᴅ ᴛᴏ ᴛʜᴇ ɴᴇxᴛ ɢᴇɴᴇʀᴀᴛɪᴏɴ (ᴀ ᴘʀᴏᴄᴇꜱꜱ ᴋɴᴏᴡɴ ᴀꜱ ɴᴀᴛᴜʀᴀʟ ꜱᴇʟᴇᴄᴛɪᴏɴ).

Explanation:

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Genetic variations that alter gene activity or protein function can introduce different traits in an organism. If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation (a process known as natural selection).

Explanation:

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from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.