can someone please help me with this biology question? please I'll fan and give a medal...

Question

abbycross167 · Answer

Question- Pretend that eyes only come in three colors, brown, green and blue. Eye color is dependent on two genes. Brown or blue on the first, and green or blue on the second. (This will be a Punnett Square with two traits.) The first gene controls a colored layer near the front of the eyeball (nearest the observer). If this colored layer is brown (BB or Bb), the observer will see brown eyes and the second layer will not be seen. If the first layer is blue (bb), the observer will see through that layer to the second colored layer behind it. The second colored layer can be green (GG or Gb) or blue (bb). If a woman has green eyes, what are her possible allele combinations on her genes for eye color (her possible genotypes)? List them all.

mathmate · Answer

For the green to go through, the first layer must be "transparent", or bb AND the second layer must show green somehow, (Gb, bG, or GG).

Else you can make a Punnett square, and identify from there.
I'll give you a kickstart:
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