Question

Horses have three basic coat colors: red (or chestnut), bay, and black. All the colors are controlled by the interaction of two genes, Extension (E) and Agouti (A). The following combinations produce bay color: EE/Aa, Ee/Aa, EE/AA, Ee/AA. Only two produce black color: EE/aa, Ea/aa. Other combinations. of the alleles of these genes plus mutations of others result in many possible coat colors and patterns in horses.
Coat color in horses is an example of which type of inheritance?

Iter
Ite
© dominant inheritance
• Mendelian inheritance
polygenic inheritance
recessive inheritance

Answer 1

Mendelian inheritance.

Explanation: the coat colors are determined by two interacting genes (Extension and Agouti) with dominant and recessive alleles (an example of epistasis — gene interaction). This still follows Mendelian patterns of dominant/recessive alleles acting at two loci, so "Mendelian inheritance" is the best choice among the options.