Determine if each description below applies to an oncogene, a proto-oncogene, or a tumor suppressor gene. some descriptions may apply to more than one of these gene types. drag the gene types on the left to the appropriate blanks on the right to match the descriptions. gene types can be used once, more than once, or not at all. - gene(s) that could code for a normal growth factor. - gene(s) whose presence can cause cancer. - type of gene(s) found in normal cells and cancer cells. - type of gene(s) found in cancer cells. - type of gene(s) found only in cancer cells. - gene(s) whose absence can cause cancer. - type of gene(s) found in normal cells.

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons

Dna and rna share a number of similarities,but they also differ in certain aspects of their structure. wich nitrogenous base is found in rna but is not found in dna

Monarch butterflies have brightly colored orange wings with black patterns on them, making them easily visible to birds that eat butterflies and moths, yet birds rarely eat the monarchs. likewise, the monarch caterpillars are brightly striped yellow and white and black, and they also are rarely eaten by birds, although some wasps will attack them and feed them to their young. what can be inferred from these observations? monarchs must threaten and attack birds, but not wasps. monarchs have a way of discouraging bird predation that does not involve hiding. monarchs’ wings are so colorful that most birds must find them difficult to eat. monarchs lay more eggs than other less conspicuous butterflies.