Carla receives an allele for blue eyes from her mother, and an allele for brown eyes from her father If brown eye color is a dominant trait and blue eye color is a recessive trait, what can be determined about the color of Carla's eyes?A. Carla's eye color cannot be determined. B. Carla has brown eyesC. Carla has green eyesD. Carla has blue eyes

Option B) Carla has brown eye

Explanation:

Sex-linked characters such as colour vision are determined by a gene located on the X-chromosome.

The recessive allele for brown-eyed colour was masked in Carla's mother (that is why she had blue-eyed colour), but expressed in Carla's father (reason for his brown-eyed colour)

Thus, Carla's brown-eye colour means she possess a homozygous allelic pair for the sex-linked character, since her both parents contributed X-chromosome each.

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