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Introduction to Morgan's Experiments

In fruit flie...

Question

In fruit flies, allele for long wing is dominant to the allele for vestigial wing. When heterozygous long winged flies were crossed with vestigial winged flies, 192 offsprings were produced. Of these 101 had long wing & 91 had vestigial wings.
If an exact Mendelian ratio had been obtained, then the number of each phenotype would have been

A

Long winged - 64
Vestigial winged - 128

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B

Long winged - 96
Vestigial winged - 96

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C

Long winged - 128
Vestigial winged - 64

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D

Long winged - 192
Vestigial winged - 0

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Solution

The correct option is B Long winged - 96
Vestigial winged - 96

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Q. Choose the correct answer from the alternatives given.

In fruit flies, the long wing is dominant to the vestigial wing. When heterozygous long-winged flies were crossed with vestigial-winged flies, 192 offsprings were produced. Of these, 101 had long wings and 91 had vestigial wings. If an exact Mendelian ratio had been obtained, then the number of each phenotype would have been Long-winged: vestigial-winged.

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