Many human behavioral traits have both genetic and environmental components. Bipolar disorder has long been known to be familial, and more recently a number of genes and/or SNPs have been found to be involved
What are three or more reasons that this research has been hampered?
Answers will vary, but several examples are included here. Variations in the diagnosis criteria for bipolar disorder may make differing degrees of the disorder difficult to distinguish. In addition, there may be certain variants, or genes with major versus minor input, so the combination of mutations in an individual may affect the severity of their phenotype. This also may affect the age of onset variability, which can make diagnosis difficult and could be affected by environmental factors such as hormones, stress, etc. There may also be variable response to medications, which could be a function of the particular mutation or the other genes that the individual possesses that may allow a better response to a particular treatment.
You might also like to view...
Which one of the following is not an adaptation shown by modern birds?
A. a respiratory system that allows all of the air to pass through the lungs in one direction B. complete division of the heart into right and left halves C. endothermy D. wings and a long feathered tail E. modified beaks and feet to support feeding behavior
Which of the following is made during a secondary active transport process?
a. glucose b. oxygen c. ATP d. carbon dioxide
Action potentials generated in rod and cone
cells are processed and integrated by ____ cells. a. bipolar b. ganglion c. lateral geniculate nucleus d. visual cortex e. all of these
You are out cycling and start to climb a hill. As you crest the hill, just before cycling down, what energy have you
stored? a. kinetic energy b. thermal energy c. chemical energy d. electrical energy e. potential energy