Are Jews allowed to eat crops and animals that have been hybridized? Whether crossbred themselves or by a non-native?

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One is allowed to eat kilayim produce, the only exception is kilayim produce that comes from the grapevine.

Refer to the Mishna in Kilayim 8:1

כִּלְאֵי הַכֶּרֶם אֲסוּרִין מִלִּזְרֹעַ, וּמִלְּקַיֵּם, וַאֲסוּרִין בַּהֲנָאָה. כִּלְאֵי זְרָעִים, אֲסוּרִים מִלִּזְרֹעַ וּמִלְּקַיֵּם, וּמֻתָּרִין בַּאֲכִילָה, וְכָל שֶׁכֵּן בַּהֲנָאָה. כִּלְאֵי בְגָדִים מֻתָּרִין בְּכָל דָּבָר, וְאֵינָן אֲסוּרִין אֶלָּא מִלִּלְבֹּשׁ. כִּלְאֵי בְהֵמָה מֻתָּרִים לְגַדֵּל וּלְקַיֵּם, וְאֵינָן אֲסוּרִים אֶלָּא מִלְּהַרְבִּיעַ. כִּלְאֵי בְהֵמָה אֲסוּרִים זֶה בָזֶה

Kilayim of the vineyard: it is forbidden both to sow and to allow to grow, and it is forbidden to derive benefit from them. Kilayim of seeds: it is forbidden both to sow and to allow to grow, but it is permitted to eat them, and all the more so to derive benefit from them. Kilayim of clothing: is permitted in all respects, except that it is forbidden to wear them. Kilayim of beasts: it is permitted to raise and to keep, and it is only prohibited to cross-breed them. Kilayim of beasts: these one are prohibited with these.

Refer also to the Gemara in Chullin 115a which states similarly.

Finally, see Rambam - Mishneh Torah Hilchos Kilayim 1:7:

הַזּוֹרֵעַ זְרָעִים כִּלְאַיִם וְכֵן הַמַּרְכִּיב אִילָנוֹת כִּלְאַיִם אַף עַל פִּי שֶׁהוּא לוֹקֶה הֲרֵי אֵלּוּ מֻתָּרִין בַּאֲכִילָה וַאֲפִלּוּ לָזֶה שֶׁעָבַר וּזְרָעָן שֶׁלֹּא נֶאֱסַר אֶלָּא זְרִיעָתָן בִּלְבַד. וּמֻתָּר לִטַּע יִחוּר מִן הָאִילָן שֶׁהֻרְכַּב כִּלְאַיִם וְלִזְרֹעַ מִזֶּרַע הַיָּרָק שֶׁנִּזְרַע כִּלְאַיִם

Although he is liable for lashes, when a person sows forbidden species together or grafts forbidden species of trees together, the produce that grows is permitted to be eaten, even by the person who transgressed and sowed it. For it is only sowing that is forbidden. It is permitted to plant a branch from the grafted tree or plant the seeds from a vegetable that was planted together with mixed species.


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