Alleles are alternative forms of genes and are represented by two

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Answer 1

Alleles are alternative forms of genes and are represented by two letters. For example, in a gene that controls flower color, "R" might represent the allele for red flowers and "r" might represent the allele for white flowers. In this context, the combination of alleles (like "RR", "Rr", or "rr") determines the phenotype of an organism.