An illustration of Sturtevant's cross, showing the chromosomes, illustrates his logic
Sturtevant illustrated the crosses and offspring resulting from a parental strain of gray-eosin female flies and yellow-red male flies. He followed this cross to the F2 generation.
This image is linked to the following Scitable pages:
How would you feel if you had to be the one to challenge Gregor Mendel's paradigm-shifting laws of inheritance? Yet Thomas Hunt Morgan did exactly this and in the process made gene mapping possible.
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