Quote Originally Posted by GenePirate View Post
Be careful; this might confuse people. Each parent can only contribute one allele of the homologous allele pair that they have. So AAss can only contribute As. That's it. aaSs can contribute either aS or as--equal odds. So you will have offspring that are either AaSs or Aass. If that's what you meant, then you hit it.
Yeah, sorry, I sort of skipped a step. After you have determined that the albino parent is AAss, you would then write it in the punnett square as passing on As. Then the spider is aaSa, but can pass on either aS or as.

So yes, that's what I meant.