Answer:
Yes
Explanation:
Even though right handed is dominant, each parent carries two genes. It is possible that each parent carries both a dominant and a recessive gene, and with the right combination of chromosomes, those two recessive genes could end up together, making the person left handed.
Punnet square (sorry its kind of hard to imagine, but imagine drawing dris lined between each letter):
H h
H H H
h H h
That bottom right lowercase h is the possible left handed gene.
