alleryStart learning →Who built the first chromosome map, and in which year?
ACurt Stern in 1931
BWalter Sutton in 1902
CAlfred Sturtevant in 1913
DFrans Janssen in 1909
Answer & Solution
Correct answer: C. Alfred Sturtevant in 1913
1. In 1913 Alfred Sturtevant was an undergraduate student in Morgan's laboratory.
2. He gathered the laboratory's results and worked on them overnight.
3. By the next morning he had created the first chromosome map.
4. Janssen had seen chiasmata in 1909 but could not turn them into a map.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 13 "Modern Understandings of Inheritance", section 13.1 Chromosomal Theory and Genetic Linkage_
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