A polygenic trait that require the additive effects of many alleles to be expressed. Height is an example of a polygenic trait.
Or, a trait that has many alleles to fill the loci on chromosomes. Blood types are examples of this. A, B and O are all alleles that git the two chromosomal loci, but only any two at once whether homozygous or heterozygous.
A multiple allele trait is like hair color or blood type.
In the example of blood types:
A is dominant over O
B is dominant over O
A and B are not dominant or recessive over each other
That is why there are the blood types of A, B, AB, and O
Traits governed by multiple alleles are controlled by three or more alleles, rather than two. An example in humans is the ABO blood group system. There are three alleles in the ABO blood group system, IA, IB, IO. These three alleles can produce six genotypes, AA, AO, BB, BO, AB, OO. These genotypes can produce four different phenotypes, A (genotypes AA or AO), B (genotypes BB or BO), AB, (genotype AB) and O (genotype OO).
It is a trait that is determined by more than one pair of alleles.
single allele traits are traits that involve a single allele. This means the only outcome of the gene is being dominant or recessive
Human ABO blood groups are controlled by multiple alleles.
A contributing allele is a dominant allele which adds to the phenotype (the characteristics or traits of an organism).
Males, because they have one X chromosome, in which the traits are carried on. Therefore, if they have one allele they will have that trait because they do cannot have another allele to affect it.
pleiotropy
blood type is an examples of multiple-allele inheritance.
An organism that is heterozygous for two traits means that it contains both the dominant allele and the recessive allele for both of the traits in question. For example, take a plant that produces peas. The gene that produces yellow seeds (denoted Y) is dominant, the gene for green seeds (y) is recessive. The gene that produces round seeds is dominant (R), the gene for wrinkled seeds (r) is recessive. So if this organism was heterozygous for both traits its genotype would be: Yy/ Rr Which means it has the allele for yellow seeds and the allele for green seeds (trait one), and also has the allele for round seeds and the allele for wrinkled seeds (trait two). Its phenotype (the traits it displays) will be yellow round seeds, as these are the dominant traits.
Too many to begin listing.
Alleles are alternate versions of genes that code for certain phenotypes, or traits. The traits of an individual are a result of the interaction between their genotype (alleles) and the environment.
A contributing allele is a dominant allele which adds to the phenotype (the characteristics or traits of an organism).
A multiple allele system is when there are more than two possible allele pairs for a single locus.
They are traits that are passed from parent to offspring, and therefore develop into phenotype.
A trait with no clearly dominant allele.
Males, because they have one X chromosome, in which the traits are carried on. Therefore, if they have one allele they will have that trait because they do cannot have another allele to affect it.
pleiotropy
blood type is an examples of multiple-allele inheritance.
An organism that is heterozygous for two traits means that it contains both the dominant allele and the recessive allele for both of the traits in question. For example, take a plant that produces peas. The gene that produces yellow seeds (denoted Y) is dominant, the gene for green seeds (y) is recessive. The gene that produces round seeds is dominant (R), the gene for wrinkled seeds (r) is recessive. So if this organism was heterozygous for both traits its genotype would be: Yy/ Rr Which means it has the allele for yellow seeds and the allele for green seeds (trait one), and also has the allele for round seeds and the allele for wrinkled seeds (trait two). Its phenotype (the traits it displays) will be yellow round seeds, as these are the dominant traits.
single genes wiht multiple alleles
An allele is a type of gene that is hereditory. In fertilisation, an allele from both the father and mother are fused, this is multiple allele hereditory. Alleles influence many things, from hair colour to blood type. human blood typeshuman blood types