Alleles for a particular phenotype determine what characteristic an organism will express, as with the following example where. 1  Chromosome 1 contains an allele for blonde hair. 2  Chromosome 2 contains an allele for brown hair. 3  Chromosome 3 contains an allele for blue eyes. 4  Chromosome 4 contains an allele for brown eyes.
Because of the patient's smoking history and abnormal chest radiograph, a neoplasm was initially suspected as a cause of SIADH. The head trauma was too remote to be of concern. Although 1 case of risperidone-associated hyponatremia has been reported, the risk seems low with this agent and with olanzapine.
Symptoms include confusion, headaches, nausea and bloatingâstuff thatâs easily confused with dehydration. In severe cases, hyponatremia can lead to seizures, organ failure and even death. Typically, though, guzzling down too much fluidâespecially from certain rehydration drinksâcan ironically cause dehydration.