08-27-2015, 12:12 AM
(08-26-2015, 09:10 PM)oncemoreuntothejimbreech Wrote:
Multifactorial diseases don't have a single cause. They have multiple causes. They have multiple combinations of multiple causes. Stating environmental and lifestyle factors play a larger role than genetics is completely false. That is what youkeep ignoringdon't understand about this whole genetic argument. You're not going to get cystic fibrosis from environmental and lifestyle factors unless you inherit a defective CF gene from each parent.
I'm not even going to get into genetic testing because it is beyond your comprehension.
Eye color may get lighter or darker, but "don't it make your brown eyes blue" is just a song lyric.
Sexual preference is not a disorder. You have a sexual preference. Is it a disorder? No.
Two words: just stop.
Oh dang, I forgot to include examples of your lack of reading.
from the very top of your first link:
http://www.genetics.edu.au/Publications-and-Resources/Genetics-Fact-Sheets/Fact%20Sheet%2011
Important points
Multifactorial inheritance refers to the pattern of inheritance of common health problems and rarer conditions caused by a
combination of both genetic and other factors that may include internal factors such as ageing and exposure to external
environmental factors such as diet, lifestyle, and exposure to chemicals or other toxins
yes it's caused by a combination, however, you might be at risk for it, but until something happens that triggers it, you might not ever develop the problem, see next paragraph.
Multifactorial conditions have in common that they do not always develop despite the suggested presence of a faulty gene(s)
The inherited faulty gene(s) make the person at increased risk for developing the condition (predisposed or susceptible) but unless
other factors are present, the condition may never develop at all
There it is again, referring to other factors.
It may be possible to determine if family members are at risk for a particular multifactorial condition by examining their family
health history and discussing it with their doctor
Please note the particular word "risk".
Having one or more blood relatives who have been affected by a condition, particularly at a younger than expected age, is an
indication that family members may be at risk of also developing that condition or passing it on to the next generation
Knowing that a person is at increased risk can lead to the use of early detection tests and preventative strategies. (See Genetics
Fact Sheet 9)
For a very few conditions, triggers have been identified, for example lack of the vitamin folate in the developing baby’s
environment is linked to the chance that the baby will have a neural tube defect such as spina bifida. Supplementation of a
woman’s diet with folate in pre-pregnancy and in early pregnancy can significantly reduce the chance of a baby born with this
condition. Such a preventative approach is only possible for those few conditions where the environmental trigger, or some of the
triggers, have been identified
There's those words again, environmental triggers.
Research is continuing to better understand the process that lead to a build-up of faulty genes in a person’s body over their
lifetime, causing the condition to develop. For those who are at increased risk for conditions due to an inherited predisposition,
this may provide the means by which the condition is avoided altogether
Over time.... means as they were exposed to different toxins in their environment.
Two words: just stop.
![[Image: 4CV0TeR.png]](https://i.imgur.com/4CV0TeR.png)