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Genetics sex linkage experimentsIlona Miko, Ph. Learn about Thomas Hunt Morgan, the first person to definitively link trait inheritance to a specific chromosome and his white-eyed flies. Aa Aa Aa One day in , American geneticist Thomas Hunt Morgan peered through a hand lens at a male fruit fly, and he noticed it didn't look right. Instead of having the normally brilliant red eyes of wild-type Drosophila melanogaster, this fly had white eyes. Morgan was particularly interested in how traits were inherited and distributed in developing organisms, and he wondered what caused this fly's eyes to deviate from the norm. Morgan's fly lab Figure 1 at Columbia University was already in the habit of breeding Drosophila so that the researchers there could observe the transmission of genetic traits through successive generations, so Morgan chose to do a simple breeding analysis to find out more about white eyes. Little did Morgan know that, with this white-eyed fly, he was about to confirm the chromosome theory.Sex Limited Inheritance in Drosophila” () by Thomas Hunt Morgan. In , Thomas Hunt Morgan performed an experiment at Columbia with a specific factor on the X chromosome, then the trait was called X-linked. Inheritance probabilities of sex-linked traits are depend directly of the sex of carrier Morgan's experiment involved crossing purebred red-eyed female fruit flies. In most of these cases, sex is determined by special sex chromosomes. (In Drosophila and many other experimental systems, a superscript plus sign is used ...the end of the story look at the video above ↑ ↑ ↑

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Faumuro 9 months ago
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