Paraneoplastic syndromes in cancer involve excessive production of substances by multiple means. A common substance found in excessive amounts resulting from cancer paraneoplastic syndromes is a. calcium. b. potassium. c. tumor necrosis factor. d. insulin.

The correct answer is option a. "calcium".

Explanation:

A paraneoplastic syndrome is a set of symptoms that a person experience as a consequence of suffering from cancer. The levels of calcium are usually elevated as a result of paraneoplastic syndrome. This is known as paraneoplastic hypercalcemia, and usually disappears once the tumor is successfully treated.

you and your brother should be dizygotic twins (fraternal) twins since identical twins can only be one gender: boy and boy   or   girl and girl.

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects