Molecular systematics - The platypus put in its place

被引：74

作者：

Penny, D

Hasegawa, M

机构：

[1] MASSEY UNIV,DEPT PLANT BIOL & BIOTECHNOL,PALMERSTON NORTH,NEW ZEALAND

[2] INST STAT MATH,MINATO KU,TOKYO 106,JAPAN

来源：

NATURE | 1997年 / 387卷 / 6633期

关键词：

D O I：

10.1038/42352

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The duck-billed platypus is a monotreme - a mammal that lays eggs. For many years it has been seen as more primitive than both marsupial (pouched) and placental mammals, and has been placed on an evolutionary lineage which pre-dates the divergence of marsupials and placentals. Analyses of long sequences of mitochondrial DNA, however, show that monotremes lie squarely on the marsupial branch of the evolutionary tree.

引用

页码：549 / 550

页数：2

共 12 条

[1]

Adachi J, 1996, J MOL EVOL, V42, P459

[2] Pattern and timing of evolutionary divergences among hominoids based on analyses of complete mtDNAs [J].