The Coat Color in a Siamese Cat Is Determined by a Temperature-Sensitive

question 63

Multiple Choice

The coat color in a Siamese cat is determined by a temperature-sensitive allele that allows the brownish pigment melanin to be produced in extremities of the body.What might explain this phenomenon?

• A) Melanin appears darker in extremities because less light is reflected.
• B) Alleles are used to produce proteins that function best in specific temperature ranges.
• C) Siamese cats evolved in warm climates and did not need melanin.
• D) Extremities in a cat are more prone to damage from sunlight.