Class 10 Science Biology Heredity and Evolution
The alleles are
(a)
A pair of genes governing a specific character such as tallness or dwarfness
(b)
Genes which are inactive
(c)
Genes governing eye characters
(d)
Genes present in allosomes
Correct answer: (a) 
Solution: An allele is a pair of genes located on the same locus of the homologous chromosome. Alleles can be dominant or recessive of the same character, for example, tall & dwarf, round seed & wrinkled seed, green & yellow etc. So the correct answer is "A pair of genes governing a specific character such as tallness or dwarfness".

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