Radiation and Radish Mutations
Name: Andrew D.
Hi. I am 15 years old and I am in the 9th grade.
My project is: The Effect of Radiation on Radish Seeds.
I have conducted research and have carried out my experiment.
I planted 4 radish seeds, of which two were non radiated, and two were
radiated under 320 gray and 920 gray. I believe they are measured in
gray. The seeds were radiated under a X-ray machine at a doctor's office.
My hypothesis was correct, that the seeds would undergo mutations. The
two non radiated seeds grew perfectly normal, as expected. The
germination time was said to take 4 to 10 days, and on the 5th day, they
sprouted. However, the seed exposed to 320 gray did not sprout up until
the 7th day. Today is the 10th day, and the seed exposed to 920 gray has
not sprouted. However, the seed exposed to 320 is mutated with only one
leaf, and stunted growth. There is also dark shades of brown found on the
outer lining of the seeds. I have done research about mutations such as
point mutations, chromosomal mutations, and frameshift mutations.
However, I would extremely appreciate if you can help me to determine the
scientific effect and explanation for the cause of these mutations, so
that I can successfully complete my project.
Anthony Brach, Ph.D
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Update: June 2012