Here is the family tree for a family that has a history of cystic fibrosis Give the possible genotypes of all the individuals in the family tree: Let the normal allele = N and the cf allele = n Draw a genetic cross diagram for a cross between 6 and 7 to show possible offspring Cystic fibrosis (cf) is a recessive condition Key Normal male Male with cf Normal female Female with cf

Here is the family tree for a family that has a history of cystic fibrosis Cystic fibrosis (cf) is a recessive condition Key Normal male Male with cf Normal female Female with cf Nn NN or Nn? nnNn nn Nn Give the possible genotypes of all the individuals in the family tree: Let the normal allele = N and the cf allele = n Draw a genetic cross diagram for a cross between 6 and 7 to show possible offspring

Here is the family tree for a family that has a history of Huntington’s disease Give the possible genotypes of all the individuals in the family tree: Let the Huntington’s allele = H and the normal allele = h Huntington’s disease is a Dominant condition Key Normal male Male with Huntington’s Normal female Female with Huntington’s

Here is the family tree for a family that has a history of Huntington’s disease Give the possible genotypes of all the individuals in the family tree: Let the Huntington’s allele = H and the normal allele = h Huntington’s disease is a Dominant condition Key Normal male Male with Huntington’s Normal female Female with Huntington’s Hhhh Hh Hh or HH? hh In a dominant condition, two heterozygous parents will produce 3 sufferers: 1 non-sufferer!