Question
In the 1920s, this person proposed that the self-reproduction of mutated genes was key to natural selection. For 10 points each:
[10m] Name this biologist who won the 1946 Nobel Prize in Physiology or Medicine “for the discovery that mutations can be induced by X-rays.” This person also names an effect where the absence of recombination leads to an accumulation of deleterious mutations.
ANSWER: Hermann Joseph Muller [accept Muller’s ratchet]
[10e] Muller’s work on organisms in this genus led to its chromosomal arms being named “Muller elements.” This genus’s melanogaster species is a common model organism.
ANSWER: Drosophila [accept Drosophila melanogaster]
[10h] Muller made Drosophila into a key model organism by developing this special X chromosome to track the hereditary transmission of mutations. This chromosome contains a dominant phenotypic marker for easy identification, a recessive lethal to kill any males receiving it, and an inversion to suppress meiotic crossing over.
ANSWER: ClB (“C-L-B”) chromosome [prompt on balancer chromosome by asking “what was the first balancer chromosome, used in Drosophila?”]
<Science - Biology>
Summary
| 2024 ARGOS @ Brandeis | 03/22/2025 | Y | 3 | 13.33 | 100% | 33% | 0% |
| 2024 ARGOS Online | 03/22/2025 | Y | 3 | 13.33 | 100% | 33% | 0% |
Data
| Thompson et al. | Aw we're so sorry to hear that maman died today, she gets five big booms | 0 | 10 | 0 | 10 |
| UBC | I wish it were possible to freeze time so I would never have to watch you retire | 0 | 10 | 0 | 10 |
| CLEVELAND, THIS IS FOR YOU! | throw away your cards, rally in the streets | 10 | 10 | 0 | 20 |