Epiboly is the process of

Assertion : Senescence is the time when age associated defects are manifested.

Reason : Certain genes may be undergoing sequential switching on and off during one's life.

Enlarged end of penis (called the glans penis) is covered by the skin called

Home use kits for determining a women's fertile period depend on the detection of one hormone in the urine. This hormone is

Telolecithal eggs have