Flying Squirrels Essay examples

Flying Squirrels Essay examples

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Flying squirrels is in subfamily Petauristinae. They are arboreal and nocturnal. They do not actually fly, but glide between trees by a gliding membrane (patagium). This membrane connects the front legs to the back legs (Parr, 2003). In another word, a furry parachute-like membrane stretches from wrist to ankle. Flaps of skin connecting limbs to body provide a wing-like surface. All species have reddish eyeshine, brighter in the large species than the smaller ones which may be quite dim. The subfamily shows severe taxonomic complications, with little agreement among mammalian researchers (Parr, 2003).
Giant flying squirrels (Petaurista sp.) have highest diversity in term of richness in population in Southeast Asia. This species is large in size, being on average 422 mm long. The Red Giant Flying Squirrel is believed to mate twice a year and the young are typically born in March or August in litters of 2 - 3 (Parr, 2003).
The Indochinese ground squirrel (Menetes berdmorei) is a member of the family Sciuridae. The family has only 29 species of 14 genera in Thailand (Lekagul and McNeely, 1977, 1988; Par, 2003). The characteristics of the Indochinese ground squirrel are black mid-dorsal stripe, two or three black stripes on the sides, and reddish brown fur on the back (Lekagul and McNeely, 1977, 1988; Par, 2003). Identification is more difficult during the dry season, however, when they are much less brightly colored. They have been found throughout Southeast Asia, from the east of Myanmar to Vietnam. As a ground squirrel, it is rarely found on trees, but spends most of the time in the thick underwoods of the rainforests. (Walston and Duckworth, 2008).
The sizes of squirrels are variable between species. There are three types of...


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...th at least one restriction enzyme and sequencing the ends of the resulting fragments using an Illumina Genome Analyzer in order to sample the genomes of multiple individuals in a population (Baird et al., 2008). The major advantage of RAD is that it gives information for a very large number of loci across the genome, and for the same loci in each individual sampled.
The current method for accelerating targeted sequencing from ancient and highly degraded DNA includes the linking of multiplex PCR directly with sample barcoding and high-throughput sequencing. The method creates the chance to generate many kilobases of overlapping sequence data from 31 cave bear (Ursus spelaeus) ancient specimens at the same time (Stiller et al., 2010). It seems likely that in the future high-throughput sequencing technologies will have many advantages for the study of ancient DNA.

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