scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 1,003
Mutant Trait of Drosophila melanogaster The mode of inheritance for the mutant trait giving a dark dark body phenotype was determined using Drosophila melanogaster This phenotype was determined to be result of the ebony mutant trait An initial mating was set up between homozygous mutant males and homozygous normal virgin females The F1 generation was examined and then allowed to self cross Then the resulting F2 generation was examined and the frequency of the mutant phenotype was noted This frequency is consistent with that of an autosomal mode of inheritance X2 analysis was used and the results supported the autosomal recessive mode of inheritance X20136 P95 DF 1 INTRODUCTION Drosophila melanogaster is a convenient organism for genetic study because it is small breeds prolifically and has a short generation time Drosophila melanogaster has four chromosomes in each one of its cells 1 When the genes are not passed on to the next generation in exactly the same form that is present in the parents then this can produce mutant forms of the organism 1 One type of mutation that has been discovered in Drosophila melanogaster is the ebony mutant The phenotype of ebony flies includes a difference in body color compared to the normal which can vary from shining black to slightly darker than the normal 2 During the larva period the mutants can be identified by the darkened color of spiracle sheaths 2 This mutation is recessive and the gene is located on chromosome 3 1 Looking at this information it can be determined that the ebony mutant is an autosomal recessive trait The term autosomal means that the mutant gene is located on one of the three chromosomes besides the sex chromosomes If the gene was located on the sex chromosome then the type of inheritance would be sex-linked Recessive inheritance occurs when both matching genes must be abnormal to produce the recessive
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA