this post was submitted on 06 Feb 2025
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Science Memes

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submitted 2 days ago by [email protected] to c/[email protected]
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[–] [email protected] 11 points 1 day ago (2 children)

They're often treated with hormones.

I sort of misspoke with regard to watermelons -

Seedless watermelons are created by crossing a regular watermelon with 22 chromosomes with one that's been chemically treated to have 44 chromosomes. The resulting hybrid has 33 chromosomes, making it sterile and seedless.

[–] [email protected] 2 points 1 day ago (1 children)

This is a bit misleading. You only need to treat the first generation of 2n watermelon with colchicine (which inhibits the movement of chromosomes during metaphase) to produce a 4n watermelon. Once you have a 4n watermelon, subsequent generations do not require colchicine treatment.

[–] [email protected] 2 points 1 day ago

Ah, OK. That makes sense. Thank you.

[–] [email protected] 2 points 1 day ago

Not the person you replied to but thanks. Doesn't that contradict the meme ?