Final answer:
The most common conditional mutant in Cdc genes is the mutation of the gene that encodes the protein p53. Mutations in the p53 gene are associated with many human cancers, including pancreatic, lung, renal cell, and breast cancers.
Step-by-step explanation:
The most common conditional mutant in Cdc genes is the mutation of the gene that encodes the protein p53. Mutations in the p53 gene are associated with many human cancers, including pancreatic, lung, renal cell, and breast cancers. As many as half of all human cancers are associated with mutated p53 genes, which are classified as tumor suppressor genes.