If black eye colour is dominant over green eye colour, which letters correctly represent the dominant and recessive alleles respectively?

b and g

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g and B

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G and b

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B and b

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Solution

The correct option is D B and b
The convention of representation of the alleles is that the dominant character allele is represented by the first letter of the trait in capitals and the recessive gene is represented by the same letter but in small cases. In this example of eye colour, black is dominant which is represented by 'B' and green is the recessive colour, represented as 'b'

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