Question

Cystic fibrosis is a condition that affects mucus. Mucus is a jelly-like substancethat certain cells produce to protect the body from infection. Humans with cysticfibrosis produce mucus that is thicker and stickier than usual. This sticky mucusbuilds up in the lungs and interferes with breathing.In a group of humans, some individuals have cystic fibrosis and others do not. In this group,the gene for the cystic fibrosis trait has two alleles. The allele F is for not having cysticfibrosis, and the allele f is for having cystic fibrosis.Jason, a human from this group, does not have cystic fibrosis. Jason has one allele for nothaving cystic fibrosis and one allele for having cystic fibrosis.Based on this information, click the blue words to correct any errors in the text.Jason is homozygous for the cystic fibrosis gene.Jason does not have cystic fibrosis. This is Jason's phenotype for the cysticfibrosis trait.Jason's phenotype for the cystic fibrosis gene is FF.

Answer 1

Jason carry one allele for not having cyctic fibrosis and one allele for having cyctic fibrosis therefore he is heterozygous for the cystic fibrosis gene.

Jason does not have cystic fibrosis and it is his phenotype (physical expression of the gene) for the trait.

Jason's genotype (set of genes in its DNA) for the cystic fibrosis gene is Ff because he is heterozygous for the gene.