Chest pain and shortness of breath if blood clots form in the blood vessels in your lungs and heart. Pain, redness, warmth, and swelling in the lower leg if blood clots form in the deep veins of your leg. Headaches, speech changes, paralysis (an inability to move), dizziness, and trouble speaking and understanding if blood clots form in the blood vessels in your brain. These signs and symptoms may indicate a stroke.
From Wikipedia, the free encyclopedia. A gene knockout (abbreviation: KO) is a genetic technique in which one of an organism 's genes is made inoperative (knocked out of the organism). knockout mouse (left) that is a model of obesity, compared with a normal mouse. A conditional knockout allows gene deletion in a tissue or time specific manner. This is done by introducing short sequences called loxP sites around the gene.
1 A gene is a small section of DNA that contains the instructions for a specific molecule, usually a protein. 2  The purpose of genes is to store information. 3  Each gene contains the information required to build specific proteins needed in an organism. In humans, alleles of particular genes come in pairs, one on each chromosome (we have 23 pairs of chromosomes). 2  If the alleles of a particular gene are the same, the organism is described as homozygous for that gene. 3  If they are different the organism is described as heterozygous for that gene.