Genetic disorders can be caused by a mutation in one gene by mutations in multiple genes by a combination of gene mutations and environmental factors, or by damage to chromosomes (changes in the number or structure of entire chromosomes. A developing embryo or fetus can be exposed to numerous environmental factors. These factors can interact with the genetic susceptibility of the developing embryo or fetus to alter the outcome of development. There is growing evidence that chemicals originally considered safe can cause developmental defects. These genes influence the development and function of the brain, and ultimately control how we move, think, feel, and behave. Combined with the effects of our environment, changes in these genes can also determine whether we are at risk for a particular disease and if we are the course it might follow.

when environment affect genetic, it's called epigenetic. absolutely it can affect development.

Dr Zahra Ali Al hasnawi thank you for your contribution to the discussion

Genetic ca n cause disorder or environment or acombiation of both and affect development

Dr Jalal Alkass thank you for your contribution to the discussion

Clearly, genetic influences have an enormous influence on how a child develops. However, it is important to remember that genetics is just one piece of the intricate puzzle that makes up a child's life. Environmental variables including parenting, culture, education, and social relationships also play a vital role. Science tells us that the interactions between genes and environment shape human development. Despite the misconception that genes are “set in stone,” research shows that early experiences can determine how genes are turned on and off and even whether some are expressed at all. Each environmental factor that affects development: Social: friends, stimulation, and recreation. Emotional: stress, moral reasoning, empathy. Economic: class, access to basic needs, social and recreational amenities. Genes have an effect on most of the physical characteristics of your child such as height, weight, body structure, and the colour of their eye, the texture of their hair, and even intelligence and aptitudes. A healthy environment supplies the necessities of life, like water, food and air. It also provides resources for economic growth and the means to fight natural hazards. Genetic disorders can be caused by a mutation in one gene by mutations in multiple genes by a combination of gene mutations and environmental factors, or by damage to chromosomes. Geographically structured variation in phenotypic traits can result from genetic and environmental factors. Divergence may be primarily caused by environmental effects, which are mediated by phenotypic plasticity, the differential expression of traits under different environmental conditions