Present day IVF Technology during Vedic Period

Parwati developed lord Ganesh with her ear wax remained a vidhya up-till recent past but we know now that ear wax contain epithelial cells and clones can be produced with epithelial cells though human clones are still to be developed. Parasher was borne after eleven years of his father’s death was a vidhya those days and more over Parasher was borne to his grandmother [though the descriptions are not very clear in Mahabharat]. Now a days it is achieved as the Zygotes are kept in deep freezer and may be implanted in the uterus of surrogate mother. This surrogate mother may be a grandmother of the zygote implanted. So it is a reality now a day.

Vishwamitra was the son of Gadhi a king who was having a daughter named Satyawati [do not confuse with mother of Vyasji]. Satyavati was married to an old Brahman known as Richika who was foremost among the race of Bhrigu. Richika desired a son having the qualities of a Brahman, and so he gave Satyavati [His wife] a sacrificial offering which he had prepared to achieve this objective. He also gave Satyavati's mother another sacrificial offering to make her conceive a son with the character of a Khshtriya at her request as she was not having any son till then. But Satyavati's mother privately asked Satyavati to exchange her offering with her.This resulted in Satyavati's mother giving birth to Vishvamitra, the son of a Kshatriya Gadhi with the qualities of a Brahman; and Satyavati gave birth to Jamadagni, the father of Parasurama, a Brahman with qualities of a Kshatriya.

What does it mean? Both the offerings were destined to develop into -firstly-sons, -secondly- son's of definite characters. Hence the fate of them did not alter even offerings were exchanged. 

This may only occur if we implant zygotes of known genomes into the wombs. But this 'Manoeuvre' requires great scientific knowledge and skill. First prepare genetically altered sperm and ova. Then fertilize them in -vitro [Test tube babies are developed now a day by similar techniques.]. Then implant them into wombs.

The story whether true or imaginary is of Puranic origin means about at-least two thousand years old. But imaginations of that time cannot be so complex and so similar to the present day 'Scientific-truths'. The other logical explanation as 'Vyas ji' creator of Vedas and Paranas himself described that whole text created by him was in symbolic language.

The story says that Richika was old, means he needed some scientific help to have sons. IVF technology of today does the same. Satyawati's mother [wife of Gadhi ] was also not having a son so old Richika also helped her with the same technique.