when a red female drosophila is crossed with a white eyed male the phenotype of progeny in F1 generation will be
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Answer:
1) The eye color gene is linked with to sex and is present on the X-chromosome. X-chromosome doesn't pass directly from father to the offsprings of the same sex but follows a criss-cross inheritance, which is transferred from one sex to the offspring of the opposite sex.
2) Since the trait of white eye color is recessive and linked to sex, it shows its effect in the male because of single X-chromosome. The female flies can show white-eye trait when both its X-chromosome carry the recessive allele of the white eye.
3) At last, Morgan concluded that only X chromosome carries the gene for eye color in Drosophila. Y-chromosome did not have the gene for eye color. The genes like the eye color present on the sex chromosome are said to be sex-linked or X-linked.
After crossing between white-eyed female (XWXW) with red-eyed male (X+Y), in the F1 generation, all the females flies were red-eyed and all the male flies were white-eyed. This result obtained is not the same as expected from the normal Mendelian ratio. This shows that the pattern of inheritance of eye color is dependent on X-chromosome. Therefore, it was concluded that the gene for eye color is located on the X-chromosome.
Answer:
in drosophila, red eye character is dominant over white eyed character when a homozygous red eyed individual is crossed with homozygous white eyed individual and individuals of F1 generation and crossed 12 individuals of F1 generation are intercrossed 12 individuals are produced while eyed individual of these would be
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