The male is homozygous recessive for pattern type and heterozygous for spots. What then would be his genotype?

The female is heterozygous for both traits, so her genotype is PpGg. You were also informed that one of her homologous chromosomes has both of the dominant alleles from the two traits and one has both of the recessive alleles from each of the two traits. So, which of the following images represents the chromosomes of the female spider?

Now, given the above chromosomes, what gametes will the female spider produce?

You should now have all the information needed to perform a punnett square and determine the types of offspring produced:

Your punnett square should look similar to the one below. If it does not, review the material on gamete formation and how to set up the punnett square and try again.

Now count up how many offspring of each genotype and phenotype you have.

Return to the question page and select the correct answers.