Please choose the correct answer to the question: A "widow's peak" hairline in humans is coded by the dominant allele W. A straight hairline is coded by the recessive allele w. A man with a homozygous dominant WW produces a zygote with a woman with a heterozygous dominant Ww for the trait. Which allele combinations could occur in the zygote?

Answer1: WW or ww Answer2: WW or Ww Answer3: WW only Answer4: Ww only

Answer format: answer1/answer2/answer3/answer4