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

Question

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

What type of inheritance does coat color in horses represent?
(1 point)
Responses

dominant inheritance
    dominant inheritance
    polygenic inheritance
    polygenic inheritance
    mendelian inheritance
    mendelian inheritance
    recessive inheritance

GPT-4o mini · Answer

Coat color in horses represents **polygenic inheritance**. This is because it is influenced by the interaction of multiple genes (in this case, the Extension (E) and Agouti (A) genes), and different combinations of alleles can lead to a variety of coat colors.