homeotic gene การใช้

• The homeotic genes are activated by gap genes and pair-rule genes.
• Thus, the Hox genes are a subset of homeotic genes.
• Homeotic genes and Hox genes are described briefly.
• In the case of Parkinson's, Jacobson theorizes that his machine's magnetic waves will awaken Ali's homeotic genes.
• A key early discovery was of homeotic genes that regulate development in a wide range of eukaryotes.
• Mutations in some homeotic genes can often be lethal and the cycle of life will end at embryogenesis.
• Later during development, homeotic genes are expressed in the nervous system in a similar anterior / posterior pattern.
• Most of the Hox genes in mammals show an expression pattern that parallels the homeotic genes in flies.
• Manatees are unusual amongst mammals in possessing just six cervical vertebrae, which may be due to mutations in the homeotic genes.
• Somites have unique positional values along this axis and it is thought that these are specified by the Hox homeotic genes.
• One of the most commonly studied model organisms in regards to homeotic genes is " Drosophila ", specifically " Drosophila melanogaster ".
• The homeotic genes of this organism occur in either the Antennapedia complex ( ANT-C ) or the Bithorax complex ( BX-C ).
• Despite the terms being commonly interchanged, not all homeotic genes are Hox genes; the MADS-box genes are homeotic but not Hox genes.
• While the segmentation genes can specify the number, size, and polarity of segments, "'homeotic genes "'can specify the identity of the segment.
• Once the homeotic genes are stimulated, Jacobson hopes they will regenerate cells in Ali's brain and produce dopamine, which helps us move.
• Mutations in homeotic genes cause displaced body parts, such as antennae growing at the posterior of the fly instead of at the head.
• Two-toed sloths are unusual among mammals in possessing as few as five cervical vertebrae, which may be due to mutations in the homeotic genes.
• Three-toed sloths are unusual amongst the mammals in possessing as many as nine cervical vertebrae, which may be due to mutations in the homeotic genes.
• There are three fundamental types of genes that give way to the developmental structure of the fly : maternal effect genes, segmentation genes, and homeotic genes.
• The "'Antennapedia "'complex and the "'bithorax "'complex on the third chromosome contain the major homeotic genes required for specifying segmental identity ( actually parasegmental identity ).