If one of these cells contributes to the genetic makeup of a child, the child will have an extra X chromosome in each of her cells. In some cases, trisomy X occurs during cell division in early embryonic development. Some females with triple X syndrome have an extra X chromosome in only some of their cells. These cases are called 46,XX/47,XXX mosaics.
For other uses, see Taiga (disambiguation). Taiga (/ËtaÉªÉ¡É/; Russian: ÑÐ°Ð¹Ð³Ð°Ì; IPA: [tÉjËÉ¡a]; from Turkic) also known as boreal forest or snow forest, is a biome characterized by coniferous forests consisting mostly of pines, spruces and larches. The taiga is the world's largest biome apart from the oceans.
The name Taiga comes from the Russian word meaning forest.. The Taiga is the world's largest terrestrial biome. It covers most of Canada, Alaska, and the continental United States.The biome is most specifically described as a terrestrial subarctic and humid environment. Many other countries such as Russia, Mongolia, Sweden, Norway, Finland, and Iceland have very large parts containing the Taiga biome.he name Taiga comes from the Russian word meaning forest.. The Taiga is the world's largest terrestrial biome. It covers most of Canada, Alaska, and the continental United States.