38. Coat colour in general has intrigued scientists all over the world for centuries. Such an interest 4 could be explained by its phenotypic characteristics being easily recognizable, making it simple to follow the inheritance from generations to generations. Therefore, coat colour has become a model phenotype for studying gene action and gene interactions. The given diagrammatic representation shows the inheritance of coat colour in mice.
Analyze it carefully and answer the following questions
a. Identify the dominant and recessive trait in the coat colour.
b. Which mouse is heterozygous for coat colour-A/B/C/D? Support your choice with a valid reason
c. Find out the phenotypic and genotypic ratio if two members in the family "P" interbreeds (Show the working using a Punnett square)
d. Find out the phenotypic and genotypic ratio if a female in family P interbreeds with a white coat coloured male in family R. (Show the working using a Punnett square)