Data Bases • Custom Term Papers • Free Term Papers • Free Research Papers • Free Essays • Free Book Reports • Plagiarism? Links • Top 100 Term Paper Sites • Top 25 Essay Sites • Top 50 Essay Sites • Search 97,000 Papers @ DirectEssays.com • Search 101,000 Papers @ ExampleEssays.com • Search 90,000 Papers @ MegaEssays.com Free Essays • Term Paper Sites • Chuck III's Free Essays • Free College Essays • TermPaperSites.com • My Term Papers • Get Free Essays • Essay World • Planet Papers	Search Lots of Essays Back to Subjects - Science Drosophila Drosophila Drosophila melanogaster: Sex Linked Inheritance Pattern of White Eye Color Thomas Hunt Morgan used Drosophila (fruit flies) in genetic experiments to support the evidence of the chromosome theory of heredity. Morgan knew that in Drosophila, females have two X chromosomes and males have only one X chromosome. Morgan proposed that the gene for the eye color variant (white) is located on the X chromosome and that there is no equivalent gene on the Y chromosome. The condition of X-linked genes in the males is said to be hemizygous since there is no corresponding allele on the Y chromosome. Bibliography: Word Count: 111
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