Reference no: EM132371409

In your lab reading and in class, you learned about Punnett squares. Punnett squares illustrate the probability of different genotypes and phenotypes appearing in the offspring of a mated pair. Find the genotype and phenotype frequencies for the following crosses. Be sure to draw your Punnett square along with your answer.

a) Brachydactly (shortened fingers and toes) is a dominant trait. What are the chances of having a child with brachydactly when crossing a mother who is homozygous recessive (no brachydactly) for the trait and a father who is heterozygous (has brachydactly)?

b) (This is a challenge question ) What would the result be if we were considering more than one trait. In this instance, we want to know the inheritance of brachydactly and mid-digital hair. Both brachydactyly and mid-digital hair are dominant traits (meaning those with dominant alleles express this trait). You may use your phone or laptop to access information on dihybrid crosses and refer to the information on the whiteboard.

In this cross you have a mother who is homozygous for both brachydactyly and mid-digital hair and a father who is heterozygous for brachydactly and does not have mid-digital hair. What are the parents' genotypes and with what frequencies does each genotype and phenotype appear together?