Comparative chromosome analyses of the bottle nosed dolphin and the pilot whale

Walen, K.H.; Madin, S.H.

American Natur 99(908): 349-354

1965


Accession: 024358367

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Summary
The chromosomes of 2 species of marine mammals are strikingly similar and the diploid number is 44 for both. The sex determining mechanism is of the usual XX, XY type, and as commonly observed for land mammals, the Y chromosome is minute compared to the relatively large X.