Astudent is examining leaf cells. which organelle is most likely to be missing from the cells?
o
a. a cell wall
b. chloroplasts
c. centrioles
d. a cell membrane

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the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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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.