Final answer:
The claim that all cancers come solely from inherited genes is false; both genetic and environmental factors contribute to cancer development. The correct answer is false.
Step-by-step explanation:
The statement that all cancers evolve only from inherited genes, termed predisposition, is false. While it's true that a number of cancers can be caused due to hereditary factors, such as defective tumor suppressor alleles like the ones found in BRCA1 and BRCA2 genes, which increase the risk for breast and ovarian cancer, not all cancers originate from inherited mutations.
In fact, cancers generally result from an accumulation of DNA mutations, which can be a complex interaction of inherited genetic factors and environmental triggers. Inherited genetic markers for cancers, such as the aforementioned BRCA genes, greatly increase the risk but do not guarantee the development of cancer.
The majority of cancers are not due to inherited factors, and environmental factors, along with errors during DNA replication, play a significant role in the development of cancer.