Seedless

for example the seedless grapes are triploid hybrids. Triticale is hybrid of two different cereals. Papaya grown on Hawai should be GMO, because they had problems with some virus killing all their plantations.

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I don't think, that seedless fruits are due to biotech

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Yes.. You can even see some of the real life examples.. Like seedless watermelon. It is one of the great examples of biotechnologically altered plants. By using plasmids or vectors there made some changes in gene structure that make the fruit seedless.

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yeah, you're right, the seedless fruits are triploid... So, do you think, that triploid/tetraploid animal could live?

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... that are triploid look: http://en.wikipedia.org/wiki/Triploidy#cite_note-1 in the middle of the page... banana, apple, etc... the watermelons are seedless...

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