Dunnart

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Dunnarts
Sminthopsis leucopus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Marsupialia
Order: Dasyuromorphia
Family: Dasyuridae
Subfamily: Sminthopsinae
Tribe: Sminthopsini
Genus: Sminthopsis
Thomas, 1887
Type species
Phascogale crassicaudata
Gould, 1844
Species

21, see text

Dunnarts are furry narrow-footed marsupials the size of a mouse. They are mainly insectivorous. A male dunnart's Y chromosome has only 4 genes, making it the smallest known mammalian Y chromosome.[1]

There are 21 species, all in Australia and some in New Guinea:

[edit] References

  1. ^ Toder R., Wakefield M.J., Graves J.A.M. (2000). "The minimal mammalian Y chromosome - the marsupial Y as a model system". Cytogenet Cell Genet 91 (1-4): 285-92. doi:10.1159/000056858. PMID 11173870. 

[edit] External links