A trait that is controlled by a group of nonallelic genes. Supplement. Polygenic traits are controlled by two or more than two genes (usually by many different genes) at different loci on different chromosomes. These genes are described as polygenes.xamples of human polygenic inheritance are height, skin colour and weight. Polygenes allow a wide range of physical traits. For instance, height is regulated by several genes so that there will be a wide range of heights in a population. Word origin: poly = many + genic = of genes.
They are found in eastern Russia. The average weight of male Siberian tiger is 300 to 350kg. Its body length is around 200-230cm while its tail length varies from 90-110cm. The average weight of female Siberian tiger is 130-160kg which is always lesser than males. Her body length is 160 to 180 cm and her tail is 80 to 110 cm long.
2. The head and body length of tigers vari â¦ es from 1.4 to 2.8 m (4.6-9.2 ft.). Tail lengths vary from 0.6 to 0.95 m (2-3.1 ft.). (2)   3. The largest tigers are found in the north, gradually becoming smaller in the south.   a. The Siberian tiger is the largest subspecies. Males weigh 180 to 306 kg (397-675 lb.), and females weigh 100-167 kg (221-368 lb.). (1)   b. Bengal tigers are slightly smaller, with males weighing 180 to 270 kg (397-595 lb.) and females weighing 100 to 160 kg (221-353 lb.). (1)   c. The smallest living subspecies is the Sumatran. Males weigh 100 to 140 kg (221-309 lb.) and females weigh 75 to 110 kg (165-243 lb.).