Heredity, being the first factor to consider in understanding a child’s development, plays an
essential role. Every person’s physical appearance is generally attributed to his genetic
composition. Parental traits are passed on to the offsprings. A child’s complexion, eye color,
height, facial appearance, and gender are influenced by heredity. Hereditary influences
impose limits to a child’s physical ability which is an important function for him. Every child’s
ability to crawl, walk, or talk vary according to his hereditary influences. A child’s way of
responding and reacting to certain events, his impulses and emotions also depend on his
genetic composition. Inherited tendencies dictate how a child would respond to certain
changes in his environment. For instance, a child who is, by nature, held back or restrained,
may act shyly around other people, especially if the child is not used to being around a
crowd or other people. But, with a little support and encouragement from his parents or
teachers, the child can act appropriately according to his age. The cognitive development of
a child is also influenced by heredity. Being slow or quick to learn from instruction and
everyday experiences has some genetic basis (Petrill et. al., 2004). Parents with high IQ
(Intelligence Quotient) are more likely to bear children with high IQ, and vice versa. Some
genetic disorders can also be inherited, such as Turner syndrome, down syndrome, and
other sorts of gene mutation. Though heredity dictates some main characteristics of a child
or a person, it still has its limits, and these limits can be developed through proper nurture or
environmental stimulation.