Definition Of Gene And Allele

In the case of the gene for eye color for example one allele codes for blue eyes whereas the other may code for brown eyes.

Definition of gene and allele. Alleles may appear in pairs or in multiple forms of alleles which affect a specific trait of the offspring. They encode the instructions for the development functioning and reproduction the different traits of an individual. Alleles are a pair of genes that occupy a specific location on a particular chromosome and control the same trait. A variant form of a gene.

Genes are responsible for the expression of traits. A gene is a unit of hereditary information. While the two genes are not necessarily perfect homologs of one another there s still enough homology across the chromosome for synapsis the pairing of homologous chromosomes to occur. Genes determine individual traits.

Except in some viruses genes are made up of dna a complex molecule that codes genetic information for the transmission of inherited traits. An allele is a specific form of a gene. There can be several variations of this sequence and each of these is called an allele. Alleles contribute the diversity in phenotype expression.

Both genes and alleles are responsible for the genetic make up of a life. A gene is a portion of dna that determines a certain trait. An allele is one of these forms of a gene. Number per genus locus.

Alleles are responsible for the variations in which a given trait can be expressed. A gene is a stretch of dna or rna that determines a certain trait. The key difference between gene and allele is that a gene is a stretch of dna which determines a specific trait and an allele brings variations to a single trait. In sexually reproducing organisms each parent gives an allele for each gene giving the offspring two alleles per gene.

So what it is the difference between a gene and an allele. A section of dna that encodes for a certain trait. Genes mutate and can take two or more alternative forms. An allele is specific variation of a gene.

An allele of a gene can be as simple as a single nucleotide difference or an insertion or deletion of hundred of bases. 9 votes see 1 more reply. The sequence of nucleotides on a dna molecule that constitutes the form of a gene at a specific spot or a chromosome. For example the gene for eye color has several variations alleles such as an allele for blue eye color or an allele for brown eyes.

Each trait consists of two factors called alleles in diploid organisms. Bacteria because they have a single ring of dna have one allele per gene per organism. Locus is the location where a gene is found on a chromosome. Genes are sequences which are found on chromosomes.