this is things i never thought of. thanks all , i learned alot.

Ethnicity may cause variations in body size and body shape and this may influence timing of maturation. For example: smaller and finer body sizes generally experience late maturation.

There are many environmental factors that affects health such as air pollution, noise pollution, sand pollution, water pollution, food contamination, microorganism infections, accidents, disusters and other environmental health impacts.

Ethicity may cause variation in body size,body shape,and these my influnces timing of maturation.for example smaller and finer body sizes generally experinces late maturation.a

What if predisposition cant have an impact on health

sex and ethnicity play role in development. Each gender has it privileges and setbacks.

Sperm and egg cells are known as ‘germ’ cells, while every other cell in the body is called ‘somatic’. If a variation in the information in a gene (mutation) happens spontaneously in a person’s somatic cells, they may develop the condition related to that gene change, but won’t pass it on to their children. For example, skin cancer can be caused by a build-up of spontaneous mutations in genes in the skin cells caused by damage from UV radiation. However, if the mutation occurs in a person’s germ cells, that person’s children each have a 50 per cent chance of inheriting the faulty (mutated) gene. Sometimes, a parent may have one copy of a gene that is faulty and the other copy containing the correct information. They are said to ‘carry’ the faulty gene although they themselves will not have the condition caused by the faulty gene – they are a genetic carrier for the condition. The correct copy of a gene overrides the faulty copy. For example, the gene controlling red–green colour recognition is located on the X chromosome. A mother who carries the faulty gene causing red–green colour blindness on one of her X chromosome copies will have perfectly normal vision, as she still has a functioning gene copy for red–green colour recognition on her other X chromosome. However, her sons have a 50 per cent chance of being colourblind. This is because there is a 50 per cent chance that they will inherit the X chromosome from their mother that contains the faulty gene. There is also a 50 per cent chance that they will inherit the X chromosome containing the correct copy of the gene and so will have normal vision.

GENETIC DISEASE OR HOW IT DETERMINED ONE'S STATE OF HEALTH CAN'T IT BE CORRECTED WITH DIET OR HEALTHY LIVING?

What is the impact of gender on environmental factors?.l-p

Sex also has a significant impact on your share of resources in developing and industrialised countries and this in turn can affect development. This is discussed in more detail under environmental influences. Ethnicity may cause variations in body size and body shape and this may influence timing of maturation. For example: smaller and finer body sizes generally experience late maturation. Predisposition can have an impact on health. Research is showing that for some cancers there is a genetic link in many reported cases. Cancer of the colon and rectum, or colorectal cancer is one type of cancer where mass genetic screening may be useful in reducing the incidence of the disease. Family history is also seen as a risk factor for breast cancer. Research into Alzheimer's disease has also shown that heredity plays an important role into the incidence of this disease.