Bio question from ADA provided practice DAT

[LoveUltimate]

Bio #28. In of the answers, it said that it's true that "a single chromosome usually carries two alleles of each gene"

-I thought each chromosome (of the homologous pair) carries one allele for the gene. Therefore, wouldn't a single chromosome only carry one allele of each gene?

If someone can please clarify, that'd be awesome!! My test is this monday! EEEEEEK :/

thanks​

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[Jackson-Ave-Dental]

lol!

Yeah I think that is actually an error... When I went through it, I had to take a double look at the answer key too