Question

Which one of the following options will express intermediate skin colour in an individual?

• A. AABBCc
• B. aabbcc
• C. AaBbCc
• D. aaBbcc

Hint:

Intermediate traits arise when an individual inherits a combination of dominant and recessive alleles, resulting in a blended phenotype.

Answer 1

The Correct Option is C

Step 1: Understanding the genetic inheritance of skin colour.
- Skin colour is controlled by multiple genes, where each gene may have dominant and recessive alleles.
- Intermediate skin colour generally arises from the presence of both dominant and recessive alleles.
Step 2: Evaluating the given options.
- Option 1: AABBCc – This genotype would likely produce darker skin as it has two dominant alleles for each gene.
- Option 2: aabbcc – This genotype would likely produce lighter skin since it contains all recessive alleles.
- Option 3: AaBbCc – This genotype contains both dominant and recessive alleles, leading to an intermediate phenotype (a mix of light and dark).
- Option 4: aaBbcc – This genotype would also likely result in lighter skin, but not as light as aabbcc.
Conclusion:
Thus, the correct answer is (3) AaBbCc, which will express intermediate skin colour.
Final Answer: \[ \boxed{\text{The correct answer is AaBbCc.}} \]