Practice problem
Heterozygous vs. Homozygous — Differences & Similarities

Image source: By flomar CC BY 2.0, via Wikimedia Commons
Image source: By OpenClipart-Vectors CC0, via pixabay.com
Image source: By Tage Olsin CC BY 2.0, via Wikimedia Commons
Image source: By Karen Arnold CC0, via publicdomainpictures.net
Assume that the soccer ball above is an allele. Which of the following would be homozygous with this allele?