Len Zon has a great secret, but I couldn’t help but focus on the zebrafish he uses in his research. The colored zebrafish reminded of something I ran across while researching my fourth-grade-level book about genes—the GloFish®.
The transgenic zebrafish with its glowing colors have been genetically modified from a normal zebrafish—that is, a gene for fluorescence from a sea anemone or a jellyfish has been inserted into a zebrafish egg. The genes become part of the genetic makeup of the developing fish and as an adult, the colored zebrafish passes the modified gene to its offspring, who also are that color and continue passing the gene to their offspring. These fascinating fish are available from science suppliers and some retailers for classroom study or to keep as pets. And here’s the link to the GloFish site.