Open Question
What is left for genetic researchers to do now that the Human Genome Project has determined nearly complete nucleotide sequences for all of the human chromosomes? Explain.
19. Genomics
Genomes
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Who discovered "jumping genes" (transposons)?
A
Chase
B
Tatum
C
Crick
D
Pauling
E
McClintock
Verified step by step guidance1
Understand the concept of 'jumping genes' or transposons, which are sequences of DNA that can move or transpose themselves to new positions within the genome of a single cell.
Recognize that the discovery of transposons was a significant breakthrough in genetics, as it challenged the previously held belief that genes were static within the genome.
Learn about Barbara McClintock, an American scientist and cytogeneticist, who discovered transposons in the 1940s through her work on maize (corn).
Acknowledge that McClintock's discovery was initially met with skepticism, but it was later validated and earned her the Nobel Prize in Physiology or Medicine in 1983.
Remember that McClintock's work laid the foundation for understanding genetic variation and the dynamic nature of genomes, which has implications in fields such as evolution, development, and disease.
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