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Google Maps adds a weather layer


A Google Maps screengrab shows weather data from across India.

Scientists claim to have discovered the origin of the kangaroo’s hop, after sequencing the genome of a type of wallaby for the first time.

An international team, led by University of Melbourne, has pinpointed a cluster of genes it believes are responsible for the animals’ unusual form of locomotion, the latest issue of the Genome Biology journal reported.

In fact, the scientists have identified HOX — a cluster of genes — key to the development of the kangaroo’s enlarged, powerful hind legs and its distinctive hop, which is common among members of the kangaroo family.

According to them, it’s the first time the genome of tammar wallaby, a species belonging to the kangaroo family, has been sequenced, which would provide researchers with the ability to study a key point in mammalian evolution.

Marsupials and placental animals, which include humans, diverged from a common ancestor around 180 million years ago.

By comparing the wallaby genome with those of placental mammals, the scientists have been able to identify several groups of genes that are unique to marsupials. The tammar genome contains one of the largest families of genes required for detecting smell compared to other mammals.

The scientists found it has more than 1,500 genes responsible for detecting smells.

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This entry was posted on August 23, 2011 by in Technology and tagged , .

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