RNAProtein160-page19 - by the jumping gene. When the gene...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Gene Expression – DNA to Protein - 19 Transposons and Transposition Some DNA alterations are caused by transposons, genes or small pieces of chromosomes that literally "jump" from one region of a chromosome to a second, or to a different chromosome completely. Transposons, also called "jumping genes", often work to inactivate genes in the region where they are inserted. The "transposable element" was first discovered in corn by Barbara McClintock in the 1940's. Different pigment patterns resulted from the "mutations" caused
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: by the jumping gene. When the gene jumped into the middle of the gene to produce pigment, the pigment gene could no longer function and caused the pigment variations observed. She received little support for her discovery at the time; the phenomenon had not been seen in other organisms. However, in the 1970s similar jumping genes, called transposons, were described in viruses and bacteria and subsequently found in most organisms. Barbara McClintock was awarded a Nobel Prize for her work in 1983....
View Full Document

This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.

Ask a homework question - tutors are online