The gene causing hairlessness in skinny pigs is a recessive gene and breeding two skinny pigs together will always result in all offspring being skinny pigs Breeding a skinny pig to a standard haired guinea pig will result in offspring that all carry one copy of the gene, but none will express hairlessness 1. Complete the chart: Genotype Phenotype Normal, hairy guinea pig (homozygous) HH Hairy Carrier guinea pig (heterozygous) Skinny pig (homozygous) Hh hh Hairy Skinny 2. A heterozygous pig is crossed with a skinny pig. What are the genotypes of the parents? Hhhh Show the crosses with a Punnett square L Hh Hh What percentage will be hairy? H HHhh 50% What percentage will be skinny? 50% 3. Two heterozygous pigs are crossed. What are the genotypes of the parents? Hh x H h HHHH h Hhhh What percentage will be hairy? 25% What percentage will be skinny? 25% 4. A homozygous hairy pig is crossed with a skinny pig. What are the genotypes of the parents? HH x hh What percentage will be hairy? 75% What percentage will be skinny? 251 5. A homozygous hairy pig is crossed with a heterozygous pig. What are the genotypes of the parents? What percentage will be hairy? What percentage will be skinny? www.biologycomer.com X​