Will be the eye colour of all female individuals in f1 generation when a white eyed female Drosophila is crossed with a red eyed male Drosophila?

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Tutorial to help answer the question

A female Drosophila of unknown genotype was crossed with a white-eyed male fly, of genotype
(w = white eye allele is recessive, w+= red-eye allele is dominant.) Half of the male and half of the female offspring were red-eyed, and half of the male and half of the female offspring were white-eyed. What was the genotype of the female fly?

Tutorial

All of the male and female offspring of a homozygous female would be red-eyed.

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A female Drosophila of unknown genotype was crossed with a white-eyed male fly, of genotype (w = white eye allele is recessive, w+= red-eye allele is dominant.) Half of the male and half of the female offspring were red-eyed, and half of the male and half of the female offspring were white-eyed. What was the genotype of the female fly?

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The Biology Project University of Arizona Updated: July 15, 1999

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