question about a passage from AAMCS 11

[mrh125]

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this whole - and + thing confuses me because in the case of bacteria and ames test the "-" means obligate and "+" means it isnt required. In this passage and most others does the + mean that protein/gene/whatever is present and does the - mean it isn't present?

stupid question, but i want to make sure this is right. i've attached an image of what i'm referring to.

 

[mrh125]

Bump. I would appreciate help on this because it's really simple and important

 

[mrh125]

bump. this is passage #6 in the biosci section btw.

 

[mcloaf]

You're correct. So for example a +/+ has two copies of the allele in question.

 

[mrh125]

You're correct. So for example a +/+ has two copies of the allele in question.

thanks 🙂