In humans, the presence of freckles is a dominant trait, and their absence is a reces-

sive trait. The eyebrow shape is also a genetically inherited trait, with separated eyebrows

being dominant and joined eyebrows being recessive. In a couple, the woman has freckles and

separated eyebrows, and she is heterozygous for both traits. The man does not have freckles

but he has joined eyebrows. What is the probability that their ospring has freckles and

separated eyebrows? Draw the tree diagram or Punnett square to justify your answer.