Scientists captured images of an elusive echidna named after the British biologist Sir David Attenborough for the first time in over 60 years. Attenborough's long-beaked echidna was last recorded ...
In male echidna there are nine sex chromosomes while platypus has an even 10. The male echidna has five X chromosomes, but only four Y chromosomes, whereas the male platypus has five X and five Y).
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