22. The diagram below shows the results of a DNA profile of a population of domestic cats. Blood samples from 10 domestic cats were obtained and analyzed for the protein transferrin using gel electrophoresis. The bands on the gel that represent the alleles for transferrin are indicated.
How many cats are heterozygous for the alleles for transferrin in this population?
Six domestic cats in the population are heterozygous for the allele for transferrin. (Note the red circles containing 2 fragments.)
![](../pics/catprofilehetero.gif)