Not completely. Research has indicated that while many people carry genes associated with a high possibility of manifesting schizophrenia symptoms, many people never develop any noticeable signs of the illness. Among those who do show signs do so in varying degrees- in other words, some cases are very serious, and others are less disruptive to the person. Some research has indicated that a stable, low-stress life can prevent these genes from activating or "switching on".
Other research has shown that stress and traumatic experiences can trigger schizophrenia symptoms at higher rates. There is much evidence for the "environmental" theories about schizophrenia- that something outside the person can influence the genes, essentially "switching them on". Stressful experience such as abuse during childhood, traumatic events such as car accidents, drug use (particularly psychotropic, hallucinogenic, or stimulant drugs) can trigger schizophrenia symptoms to be "expressed".
Weight is not entirely determined by your genetics, but it does have a strong influence.
They have learned that schizophrenia has a strong genetic component, but that there are also other factors than genetics involved.
None, because schizophrenia is a condition determined by checklists and psychiatrists. It is not a condition derived from physical brain damage.
Statistically, yes. There is a strong correlation between schizophrenia and genetics. That said, schizophrenia occurs in about .5% of the general population. So while you are statistically more likely to develop symptoms than someone who has no schizophrenics in their family, it is still quite unlikely that you will develop symptoms.
The genetic factor in schizophrenia has been underscored by recent findings that first-degree biological relatives of schizophrenics are 10 times as likely to develop the disorder as are members of the general population.
It allows psychologists to identify the differences between nature (what you are born with and cannot be changed, such as genetics) and nurture (what you learn from your surroundings and your environment.) For example, if the child's parents have schizophrenia and the child was adopted for some reason, it would be interesting to see if the child developed schizophrenia later on in life. If the child didn't develop schizophrenia, then the argument would be that you develop schizophrenia from your surroundings, it is learnt. However, if the child did develop schizophrenia, then it is more likely to do with genetics and therefore cannot be changed. Schizophrenia is just an example. It can be applied to lots of areas such as criminal behaviour, aggressive behaviour, mental disorders, illnesses and so forth.
I dont know the answer but I am trying to find out if anyone out there that has AB blood has any ties to Scythian ancestors...thanks, Susan
A person's blood type is determined by genetics, just like most everything else.
Every person is a product of their genetics. 'Manboobs' would also be determined by genetics but could probably be augmented by hormones if desired.
A persons body shape and type is determined by genetics.
For humans gender is determined by nature (genetics). For many fish gender is determined by nurture (water temperature). It differs by species.
Genetics is a funny thing. Height isn't always determined by the height of your parents. The height factor is sometimes determined by the genes of the older generations.