Multiple alleles are more than 2 different forms of the same gene. Polygenic traits are traits produced by the interaction of severel genes.
What is the difference between a multiple allele trait and a polygenic trait?
In multiple alleles the same strand of DNA is involved. For example the blood type is found on the same strand of DNA. … The polygenic inheritance is found on multiple strands of DNA. For example the formation of antibiotics to fight bacteria and other foreign bodies are found on multiple places on the DNA.
Why do multiple alleles and polygenic traits produce many different phenotypes for a trait?
Why do multiple alleles and polygenic traits produce many different phenotypes for a trait? Multiple alleles have more options for alleles, producing more phenotypes. Polygenic traits show a continuum of traits as they are controlled by multiple genes.
What is a multiple allele trait quizlet?
Multiple Alleles. – When three or more alleles control a trait. Example. Blood Types in humans.
What does polygenic traits mean quizlet?
Traits controlled by two or more genes are said to be polygenic traits, which means “having many genes.” For example, at least three genes are involved in making the reddish-brown pigment in the eyes of fruit flies. … Polygenic traits often show a wide range of phenotypes.
What is an example of a polygenic trait?
A polygenic trait is a characteristic, sometimes we call them phenotypes, that are affected by many, many different genes. A classic example of this would be height. Height in humans is very strongly genetically controlled, but there are many, many different genes that control height.
Can a trait be polygenic and have multiple alleles?
Many human traits are controlled by more than one gene. These traits are called polygenic traits. The alleles of each gene have a minor additive effect on the phenotype. There are many possible combinations of alleles, especially if each gene has multiple alleles.
What are 3 exceptions to Mendel’s observations?
- Multiple alleles. Mendel studied just two alleles of his pea genes, but real populations often have multiple alleles of a given gene.
- Incomplete dominance. …
- Codominance. …
- Pleiotropy. …
- Lethal alleles. …
- Sex linkage.
What can multiple alleles result in many different phenotypes for a trait?
Why can multiple alleles result in many different phenotypes for a trait? This can happen because the more allele options for a specific gene the more possible combinations and therefore possible phenotypes the organism that has that gene could inherit.
What are examples of multiple alleles?
Two human examples of multiple-allele genes are the gene of the ABO blood group system, and the human-leukocyte-associated antigen (HLA) genes. The ABO system in humans is controlled by three alleles, usually referred to as IA, IB, and IO (the “I” stands for isohaemagglutinin).
What is a trait caused by multiple alleles?
The best characterized example of multiple alleles in humans is the ABO blood groups, discussed in the Non-Mendelian Inheritance concept. Other human traits determined by multiple alleles would be hair color, hair texture, eye color, built, physical structures, etc.
Which of the following is an example of multiple alleles quizlet?
What is an example of multiple alleles in the human body? Blood type. You just studied 14 terms! Flashcard based on bio notes on multiple alleles.