¯

PARTHENOGENESIS

June 4, 2019

The New England Aquarium in the US recently announced that a “virgin” anaconda named Anna had given birth during the winter. The aquarium does not have a male anaconda. This is only the second known case of parthenogenesis in green anacondas.

About:

  • Etymology: The term parthenogenesis is a amalgam of the Greek words parthenos meaning virgin and genesis meaning origin.

  • Meaning:
    • Parthenogenesis is defined as “a reproductive strategy that involves development of a female (rarely a male) gamete (sex cell) without fertililisation.

    • A gamete is the egg in females and the sperm in males. In animals, parthenogenesis means development of an embryo from an unfertilised egg cell.



  • Prevalence:
    • About 2,000 species are known to reproduce through parthenogenesis.

    • It occurs commonly among lower plants and invertebrate animals (particularly rotifers, aphids, ants, wasps and bees) and rarely among higher vertebrates”.

    • Anna is a higher vertebrate, which is why the birth of her two babies has been met with so much surprise.



  • Clones of mother: Babies born through parthenogenesis are clones of the mother because there has been no exchange and rearrangement of genetic information with another individual as happens in case of a sexual reproductive process.

Latest Current Affairs

See All

Enquire Now