Situations in which one allele for a gene is not completely dominant over another allele for that gene are a. multiple genes. b. incomplete dominance. c. polygenic inheritance. d. multiple alleles.

Why can cancer in the lymph nodes (lymphoma) be particularly dangerous? a. the lymph node's ability to produce cancer-fighting lymphocytes would be compromised. b. the lymph node's ability to produce cancer-fighting lymph would be compromised. c. the lymph nodes produce lymph, which nourishes growing cancer cells. d. the lymph nodes produce chyle, which nourishes growing cancer cells.