Answer: The correct answer for the blank is- has a Bb genotype, has brown eyes.
As per the information given in the question, blue eyes is a recessive ( depicted by small letter allele, b) trait and brown eyes is a dominant trait (depicted by capital letter allele, B)
A dominant allele ( like 'B' for brown eyes) always masks the expression of recessive allele ( like 'b' for blue eyes).
Heterozygous individual means a particular trait possesses both the alleles ( that is dominant and recessive allele) in the genome, which will produce a dominant trait.
The possible genotypes for brown eyes are 'BB' ( homozygous dominant) and 'Bb' (heterzygous dominant) whereas for blue eyes is 'bb'.
Thus, heterozygous individual has a Bb genotype and will produce brown eyes.
