alleles
A gene is said to have multiple alleles if it has more than two different forms or variants (alleles). This means there are more than two variations of the gene present in a population.
One gene from a pair is called an "allele." Alleles are variants of a gene that can result in different traits or characteristics. Each individual inherits two alleles for each gene, one from each parent, and these can be either the same (homozygous) or different (heterozygous).
Different alleles for a trait are known as gene variants. For example, two different alleles for the gene that determines flower color in pea plants are purple (P) and white (p). When an individual has two different alleles for a trait, it is known as heterozygous.
Polymorphism gene effect occurs when two or more clearly different phenotypes exist in the same population of a species. In order for this to occur, morphs must occupy the same habitat at the same time and belong to a population with random mating.
An allele can have two or more variants of a gene that have the same position on the homologous chromosome. The alleles are responsible for alternative characteristics. Two copies of the same allele are called homozygous.
A polyallelic trait is a trait controlled by multiple alleles (variants of a gene) at a single gene locus. This means there are more than two possible alleles that can influence the trait's expression, resulting in a range of phenotypic variations. This can lead to a complex inheritance pattern.
Basically, because there are two sexes. One gene allele is on one chromosome from dad and the other allele is on the chromosome from mom. If more than two alleles for a trait, only two can be represented in the genome of the organism.
it is a copy of a gene ... it can form a disorder :)the copy of the gene equals to two genes the original and the different one it also can be any disorder
Every gene has a dominant and recessive allele, homozygous is just when a gene has either two dominant alleles or two recessive alleles.
Phenylketonuria (PKU) is inherited when both parents are carriers of the gene. Since it is a recessive gene, there is a 25% chance that any baby conceived by two people carrying the PKU gene will have PKU.
Many possible alleles exist for a gene, but a diploid cell contains only two alleles of each gene or two copies of a single allele. Diploid refers to the number of chromosomes that a cell has.
An indiviual letter in a punnett square representing a gene is called an allele. The two genes ( one from each parent ) together is a genotype. There isn't really two forms of a gene.