Thomas Hunt Morgan's choice of Drosophila melanogaster has been proven to be useful even today. Which of the following has/have continued to make it a most useful species?I.its four pairs of chromosomesII.a very large number of visible as well as biochemically mutant phenotypesIII.easy and inexpensive maintenanceIV.short generation time and large number of offspring

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Thomas Hunt Morgan's choice of Drosophila melanogaster has been proven to be useful even today. Which of the following has/have continued to make it a most useful species?<br>I.its four pairs of chromosomes<br>II.a very large number of visible as well as biochemically mutant phenotypes<br>III.easy and inexpensive maintenance<br>IV.short generation time and large number of offspring






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