Human eye color is controlled by multiple enzymes encoded by multiple genes; therefore, human eye color is an ______ trait.

Which of the following is not controlled by genes?Eye colourHeightHair colourNone of the above

If the phenotype reflects the activities of more than one gene, it is called a ______ trait.Multiple choice question.

A trait that has multiple genes contributing to its expression is known as which of the following?Multiple choice question.monogenic traitpolygenic traitsex-linked trait

Does eye colour in humans usually have a genetic cause, an environmental cause or both?bothgeneticenvironmental

n a population of koi fish, some individuals have red eyes and others have black eyes. The gene for eye color has two possible alleles. One allele is for red eyes (E), and the other allele is for black eyes (e).A certain koi fish in the population has the genotype ee for the eye color trait.Given this information, what phenotype does this koi fish have for the eye color trait?Choose 1 answer:Choose 1 answer:(Choice A)   black eyesAblack eyes(Choice B)   red eyesBred eyes