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Genetic Barcodes

Aug. 12, 2018

Using Genetic ‘Barcodes’, a team of scientists have found that Ornate narrow-mouthed frog — thought to be widely-distributed in Asia — is found only in Southern India and Sri Lanka.

About:

  • Genetic barcoding is also known as DNA barcoding.

  • It is a method for the quick identification of any species based on extracting a DNA sequence from a tiny tissue sample of any organism.

  • Working: The process of DNA barcoding entails two basic steps:
    • building the DNA barcode library of known species and

    • matching the barcode sequence of the unknown sample against the barcode library for identification.



Recent findings:

The recent study was conducted by team of scientists from Delhi University (DU) and the Wildlife Institute of India (WII). It’s two major findings are –

  1. Ornate narrow-mouthed frog — thought to be widely-distributed in Asia — is found only in Southern India and Sri Lanka.

    • International Union for the Conservation of Nature (IUCN) currently classifies the species as ‘Least Concern’.

    • However, on the basis of recent findings, it might get classified as threatened.

  1. Apart from ornate narrow-mouthed frog, India is also home to other species of   narrow-mouthed frogs (seen in other south Asian countries). These are:

    1. Nilphamari,

    2. Mymensingh and

    3. Mukhlesur

Source : The Hindu

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