While a child's genetic code may provide instructions for tallness, the expression of this height might be suppressed if the child has poor nutrition or chronic illness. Height is a good example of a genetic trait that can be influenced by environmental factors. For example, exposure to harmful drugs while in utero can have a dramatic impact on later child development. Gene-Environment Interactions: The environment a child is exposed to both in utero and throughout the rest of his or her life can also impact how genes are expressed.If one parent hands down a dominant brown eye gene while the other parent hands down a recessive blue eye gene, the dominant gene will win out and the child will have brown eyes. According to Louv, nature-deficit disorder is not the presence of an anomaly in the brain it is the loss of connection of humans to their natural environment. Author Richard Louv mentioned ‘Nature-Deficit Disorder’ in his famous book ‘Last Child In The Woods.’. The gene for brown eyes is dominant and the gene for blue eyes is recessive. A Look at The Positive Effects Of Connecting With Nature. Eye color is one example of dominant-recessive genes at work. In other cases, some genes follow a dominant-recessive pattern. For example, if a child has one tall parent and one short parent, the child may end up splitting the difference by being of average height. Genetic Interactions: Genes can sometimes contain conflicting information, and in most cases, one gene will win the battle for dominance.
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