Zit and Zila have the most beautiful sets of purple lips on the planet. Zilla is believed to be heterozygous for her lip color. Zit's family brags that their bloodline is pure (homozygous). Using the Punnett Square above, what is the probability that their children would have purple lips?

Question 5 options:

25%

50%

100%

None of their children would have purple lips.