Genes are the basic unit of inheritance by which characteristics are passed on from one generation to another
Genes are the basic unit of inheritance by which characteristics are passed on from one generation to another.
DNA-Deoxyribonucleic acid, contains instructions in the form of 4 chemicals which act as code letters.
DNA forms double helix and has 4 bases- Adenine (A), guanine(G), cytosine(C), thymine(T). They form pairs, A and T; G and C.
Chromosomes – long strands of DNA. In each cell, the nucleus has 46 chromosomes, 23 from mother and 23 from father.
Trait- Physical characteristics that are passed down / inherited from one generation to next, genes code for specific traits.
Alleles- Different versions of the same gene.
Allele-One version of the pair of genes that appear at a particular location on a particular chromosome and control the same characteristics like eye color.
Organisms typically have two alleles for a trait
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