presence of alleles A, B represent dominant genes for color and mask recessive traits. According to the Punnet Square, which color genotype and phenotype would be represented in the last square AB Ab aB ab AB AABB AABb AaBB AaBb black black black black Item 33 Item 34 Item 35 Item 36 Item 37 Item 38 Item 39 Item 40 Ab AABB AAbb AaBb Aabb black brown black brown aB AaBB AaBb aaBB aaBb black black yellow yellow ab AaBb Aabb aaBb aabb black brown yellow ? < (1 point) Oaabb, Black aabb, Yellow Oaabb, Brown aabb, White

1 answer

From the information provided, it appears you are looking at a Punnett square involving two genes with the following alleles:

  • A and B are dominant alleles (representing two different dominant traits, for example, color and mask).
  • a and b are recessive alleles.

To interpret the genotypes and corresponding phenotypes from the Punnett square:

  • The dominant alleles A and B will express phenotypes associated with them (e.g., black color or mask traits).
  • The recessive alleles (a, b) will express phenotypes associated only when they are both present (e.g., yellow color or other recessive traits).

From your information:

  • AABB = black
  • AABb = black
  • AaBB = black
  • AaBb = black (assuming black is the dominant trait)

When you have homozygous recessive:

  • aabb = yellow (as both traits are recessive)
  • Aabb or aaBb will express whichever dominant trait is present (likely to be brown if it results from a combination)

Now, to summarize your choices at the end regarding genotypes and their corresponding phenotypes:

  • Oaabb, Black: This is incorrect because aabb would be yellow, not black.
  • Oaabb, Brown: Incorrect; again aabb is yellow.
  • Oaabb, White: Also incorrect for the same reason.

Final Answer: You do not have "aabb, yellow" listed as one of the direct choices, but it appears that a careful summary leads to possibility identifying "aabb" as yielding yellow. So among your option, aabb, yellow would be an appropriate interpretation based on common naming conventions when recessive traits manifest.

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