pleasde help me fast !Is it true that a polygenic trait can have fewer genotypes than most single-gene traits?
No, polygenic traits always have more genotypes than single-gene traits. Polygenic traits means traits that be controlled by many genes, or in other word, many genes control one particular trait. Yield and height are two examples of polygenic traits, commonly controlled by many genes; but the seven characters of Mendel's peas are single-gene traits. Polygenic traits are also known as quantitative traits; while single-gene traits are qualitative traits.
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