Phosphorylated p53 is a protein that accumulates in the nuclei of cells that have damaged dna where it functions to block the cell cycle and activate dna repair. the p53 gene that encodes this protein is an example of a(n):

a. tumor suppressor gene.
b. protein kinase.
c. proto-oncogene.
d. oncogene.

Tumor suppressor gene.

Explanation:

p53 gene is an important gene that codes for the proteins involve in the regulation of the cell cycle. p53 gene is also known as teh genome guardian or the gate keeper.

p53 gene acts as the tumor suppressor gene as the recessive mutation in this gene leads to the development of tumor. This gene suppress the tumor activity and normally regulate the process of the cell cycle. This gene also prevents the gene mutation.

Thus, the correct answer is option (a).

it is called an accent mark

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).