In frogs, when the nucleus of an intestinal cell of a tadpole is transferred to an egg whose nucleus has been removed (nuclear transplantation), some of the eggs will develop into normal tadpoles. This demonstrates that .

This demonstrate that the nuclei from specialized cells still held the potential to be any cell despite its specialization.

Explanation:

Sir John Bertrand Gurdon can be described to have developed more on nuclear transplantation, the technique used to clone organisms and to create stem cells.

He made the conclusion after the demonstration that the nuclei from specialized cells still held the potential develop and be any cell despite its specialization.

The question above showed us that the intestinal cell nucleus of a tadpole was transferred to an unfertilized enucleated egg cell and few uninjured grew to become develop into normal tadpoles.

what's the

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.