Polygenic Traits:The kernel color in wheat and corolla length in tobacco are the examples of polygenic traits in plants. Multiple Alleles:The ABO blood type of humans is an example of a trait determined by multiple alleles. Polygenic Traits: Polygenic traits show a continuous variation of the trait in a population. Multiple Alleles: Multiple alleles does not show any variation of the trait in a population. Polygenic Traits: Polygenic traits determine quantitative traits. Multiple Alleles: Multiple alleles determine qualitative traits. Polygenic Traits:Homologous crossing over can occur between the two alleles of each polygene. Multiple Alleles: Homologous crossing over does not occur between the loci of multiple alleles. Polygenic Traits:The polygenes are located at different loci of non-homologous chromosomes. Multiple Alleles:Multiple alleles are located at the same loci of homologous chromosomes. Polygenic Traits: Environmental factors have a higher influence in the determination of a trait by polygenes. Multiple Alleles:Environmental factors have no influence in the determination of a trait by multiple alleles. Influence of the Environmental Factors on a Trait Polygenic Traits:Polygenic traits determine a trait by codominance or incomplete dominance. Multiple Alleles: Multiple alleles determine a trait by complete dominance or codominance. Polygenic Traits: In polygenic traits, many genes control a single trait. Multiple Alleles:Only one gene consists of more than two alleles. Polygenic Traits:All polygenes can be found in the individual. Multiple Alleles:Only two types of alleles are present in an individual multiple alleles can be found within the population. Polygenic Traits: Polygenic trait is a trait that is controlled by a group of nonallelic genes.
Dominant traits include series#
Multiple Alleles:Multiple alleles refer to a series of three or more alternative forms of a gene. More than two factors are involved in the determination of a trait in multiple alleles and polygenic traits.ĭifference Between Multiple Alleles and Polygenic Traits Definition.Both multiple alleles and polygenic traits are the examples of non-Mendelian inheritance patterns.Similarities Between Multiple Alleles and Polygenic Traits The hazel color eyes are shown in figure 2. Depending on the amount of melanin produced in the iris, different eye colors can be identified among humans such as black, brown, green, hazel, and blue. Sixteen different genes are involved in determining the amount of melanin produced in the iris of the eye, which ultimately produces the color of the eye.
Dominant traits include skin#
Most of the quantitative traits such as the height, weight, body shape, behavior, intelligence, eye color, skin color, and hair color of humans are controlled by polygenes.
The kernel color in wheat and corolla length in tobacco are examples of polygenic traits in plants. A mixed type of dominant phenotypes can be observed in codominance while a blend of phenotypes can be observed in incomplete dominance. Thus, a mixture of phenotypes can be visible in the offspring.
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Multiple alleles may produce either codominance or incomplete dominance patterns. Comprising of multiple alleles for a particular gene is a type of non-Mendelian inheritance pattern. The influence of multiple alleles is on a single trait. Homologous crossing over does not occur between homologous chromosomes containing alleles of the same gene. Multiple alleles are situated at the same locus of homologous chromosomes. However, some genes comprise more than two alleles. Typically, every gene comprises two alternative forms: the dominant allele and the recessive allele. Multiple alleles are the alternative forms of a gene when a particular gene comprises more than two alleles. Key Terms: Blood Types, Codominance, Complete Dominance, Dominant Alleles, Homologous Chromosomes, Incomplete Dominance, Multiple Alleles, Non-Mendelian inheritance, Polygenic Traits, Recessive Alleles
What is the Difference Between Multiple Alleles and Polygenic Traits What are the Similarities Between Multiple Alleles and Polygenic TraitsĤ. The main difference between multiple alleles and polygenic traits is that multiple alleles are involved in the determination of a single trait by complete dominance or codominance whereas polygenic traits determine a particular trait in a population by codominance or incomplete dominance of each polygene. Polygenic traits are determined by several genes.
Multiple alleles are more than two alternative forms of a single gene, which are located at the same loci of homologous chromosomes. In Mendelian inheritance, only two factors are involved in the determination of a particular trait. Multiple alleles and polygenic traits are two types of non-Mendelian inheritance patterns where many factors are involved in determining a particular trait. Main Difference – Multiple Alleles vs Polygenic Traits
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