Which of the following allows you to make a fist with your hand? A Extensor digitorum
B. Flexor carpi ulnaris
C. Palmaris longus
D All of the above

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

answer: i don't know

explanation:

you need to provide a picture, otherwise i can't tell you.

if you can provide one, i'd be more than happy to you with this!

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multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.