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.
alleles
alleles
alleles
Alternative forms of a gene are called alleles. Alleles are different versions of a gene that can result in variations in traits or characteristics. In diploid organisms, individuals inherit two alleles for each gene, one from each parent.
The alternative mutational forms of any gene are called alleles. Alleles arise through mutations and can lead to variations in the gene's expression and function. In a diploid organism, alleles can be homozygous (identical) or heterozygous (different), contributing to genetic diversity within a population.
Alleles can be either dominant or recessive. They can be identical or different for any given gene in a somatic cell, and can represent alternative forms of a gene.
alleles
alleles
alleles
mutation
You have about 20,000 to 25,000 genes in 23 chromosomes in human cell. So approximately 1000 genes are there in any single chromosome. The gene will be too big in size, if you have one single gene in any single chromosome.
1. A gene is a piece of DNA that provides a set of instructions to a cell to make a certain protein, a locus is a specific position on a pair of homologous chromosomes, and a allele is any of the alternative forms of a gene that may occur at a specific locus.
Alternative forms of a gene are called alleles. Alleles are different versions of a gene that can result in variations in traits or characteristics. In diploid organisms, individuals inherit two alleles for each gene, one from each parent.
1. A gene is a piece of DNA that provides a set of instructions to a cell to make a certain protein, a locus is a specific position on a pair of homologous chromosomes, and a allele is any of the alternative forms of a gene that may occur at a specific locus.
The alternative mutational forms of any gene are called alleles. Alleles arise through mutations and can lead to variations in the gene's expression and function. In a diploid organism, alleles can be homozygous (identical) or heterozygous (different), contributing to genetic diversity within a population.
The alternative mutational forms of any gene are called "alleles." Alleles can vary in their DNA sequence, leading to different traits or characteristics in an organism. They can be dominant or recessive, influencing how traits are expressed in the phenotype.
so after it changes it is called a gene