DIFFERENCE BETWEEN GENE AND ALLELE
GENE
It is a hereditary unit or hereditary material which is located on the chromosome. Chemically, gene is a genetically functional segment of DNA (genetic material in most of the organism).
There are two forms of gene i.e. dominant and recessive. Gene remains in pair and a gene is comprised of two different alleles which can be dominant or recessive.
Gene term was coined by Johannsen.
ALLELE
It is the short form of allelomorph earlier used. Allele occupies corresponding position on maternal & paternal chromosomes. Hence allele is the variant form of a given gene or in other words, a different sequence of a gene (locus).
A given gene may have different multiple alleles, however only two alleles are present at the locus of gene in any individual. Individual having two identical alleles is called Homozygous, e.g. TT, tt or PP, pp.
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In short we can summarize the difference as given below:
GENE ALLELE 1. It is a hereditary unit or genetically functional segment of DNA, usually responsible for a certain trait. 1. Allele is the different sequence of a gene or a variant form a gene located on the corresponding position of maternal & paternal chromosome. 2. It determines genotype of an organism. 2. It determines phenotype of an organism. 3. Gene comprises of two different alleles can be dominant or recessive. 3. Parental or maternal and dominate or recessive. 4. Example- eye color, hair color 4. Blue eye, brown hair
Frequently Asked Question (FAQ)
Gene term was coined by?
Johannsen
What is the difference between Homozygous and Heterozygous?
Individual having two identical alleles is called Homozygous. It contains only one type of allele, either dominant or recessive, e.g. TT, tt or PP, pp. Individual having two different alleles is called Hetrozygous. Contains different alleles for a trait. Both dominant and recessive, e.g. Tt, Pp.
What is Zygosity?
Zygosity is the degree to which both copies of a chromosome or gene have the same genetic sequence. In other words, it is the degree of similarity of the alleles in an organism.
Read more..
WHAT IS CHROMOSOME- AN OVERVIEW
CROSSING OVER- PROCESS & FUNCTION
MITOSIS & MEIOSIS- CELL DIVISION
CELL STRUCTURE AND FUNCTION
MENDEL’S LAW OF INHERITANCE