Which statement about the tumor suppressor gene p53 is false?

(a) it is required for apoptosis in response to dna damage.
(b) it blocks cell cycle progression in response to dna damage.
(c) it plays a role in up to 50% of human cancers.
(d) its loss causes retinoblastoma, a rare childhood cancer of the eye.

The correct answer is D its loss causes retinoblastoma a rare childhood cancer of the eye.

Explanation:

p53 is one of the most important tumor suppressor protein.It is named so because it has a molecular weight of 53 kd.p53 is encodes by TP53 gene.p53 play a significant role during apoptosis or programmed cell death.

 But the mutation in p53 does not cause retinoblastoma.Retinoblastoma is caused due to mutation in Retinoblastoma tumor suppressor protein.This disease is formed when both the allele of the retinoblatoma gene gets mutated.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: