The wild-type (normal) fruit fly, Drosophila melanogaster, has straight wings and long bristles. Mutant strains have been isolated that have either curled wings or short bristles. The genes representing these two mutant traits are located on separate chromosomes.

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27-01-2020
Biology

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The wild-type (normal) fruit fly, Drosophila melanogaster, has straight wings and long bristles. Mutant strains have been isolated that have either curled wings or short bristles. The genes representing these two mutant traits are located on separate chromosomes.

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olatunbosunadeoke olatunbosunadeoke · Answer 1 · 2020-01-28T15:43:31+01:00

This question is incomplete. However, I understand that it is mainly dealing with "Scale of gene alterations in Mutant strains of Fruitfly"

Answer: Mutant strains evolved from large-scale mutation that occured in the chromosomes of Wild-type Fruitfly.

Explanation:

Large scale mutations involves massive chromosomal alterations such as change in base sequence of multiple genes.

Note that the change in the base sequence of genes determining Wing shape and Hair length in Wild-type fruitfly, located on different chromosomes is said to be LARGE SCALE mutation; for genes controlling different characters would occupy different locations on different chromosomes.

Thus, the genes representing the two mutant traits are located on separate chromosomes are said to have undergone LARGE SCALE MUTATIONS