Answer:
The correct options are:
a) The ability to halt the cell cycle in response to DNA damage.
c) The ability to repair DNA damage.
e) The ability to stimulate cell death processes if the cell is irreparably damaged.
Explanation:
p53 gene has been called 'the guardian of the genome' because its prevents genome mutations which can bear to tumor formation. The main roles of p53 are:
DNA repair (option c): it activates a ribonucleotide reductase which is involved in DNA repair when it is damaged.
Growth arrest (option a): it avoids the cycle cell progression when a damage occur.
Apoptosis (option e): it induces programmed cell death or apoptosis (because every cell must die eventually).
These processes are involved in prevention of tumor formation through activation/inhibition patways which in last instance prevent the replication of cells with a damaged/mutated genome.
Depending on which step of ecology your talking about.
Answer: Testosterone
Explanation: Testosterone is a hormone produced in the human body. In women the ovaries and adrenal gland produce testosterone which is released in small quantities into the blood stream. In women normal level of testosterone ranges from 15- 70 nanogram per deciliter. Low levels of testosterone in women can lead to lower sex drive, obesity, depression, lack of muscle tissue, weak bones and fertility issues.
Cystic fibrosis and sickle cell diease