Since this is not my area of expertise, I searched Google under the key words "defective p53 gene" to get these possible sources:
https://www.google.com/search?client=safari&rls=en&q=defective+p53+gene&ie=UTF-8&oe=UTF-8
http://www.hackcollege.com/blog/2011/11/23/infographic-get-more-out-of-google.html
A cell with adefective p53 gene is likely to
a. stop responding to growth regulators
b. stop dividing to produce daughter cells *****
c. generate hormones that combat tumors
d. produce cells without a defective p53 gene
2 answers
The answer is
A. stop responding to growth regulators
A. stop responding to growth regulators