Facial and body features
While some children grow up looking exactly like their mother or father, some don’t even share the slightest resemblance. Experts explain this as results of generic variation since each kid only share 50 percent of their own DNA with each of their parents and siblings. So, if a baby takes after either of their parents a lot, it is because he or she has gotten to inherit their dominant genes. On the contrary, if a baby’s primary inheritance is their parents’ recessive genes, he or she might end up looking like nobody at all. Experts also explain the fact that siblings normally look alike is due to the tendency of them inheriting the same combination of genes from their parents.
Certain physical characteristics such as hand shape, finger shape, toenail shape, dimple or crooked nose or teeth are considered as dominant and can be passed down through generations. However, physical development is a dynamic progress. As a person’s bone structure is only permanently set when he reaches his 20s, keep in mind the look that your baby is having now is only temporary and is likely to be changed in the future.
Height and weight
According to various studies, although height heritability can vary from one population to another, roughly 60 to 80 percent of our height is determined by genetic factors including gender, whereas the rest attributes to environmental factors such as stress level, exercise, and dietary habits.
A newborn weight is also largely depended on his parents’, mostly the mother’s, physical condition. Nevertheless, it doesn’t permanently guarantee his weight in the future. While it is true that children born to obese parents are likely to become obese in the future and vice versa if they adopt a healthy and balanced lifestyle, they still can grow up being slim and robust.
Some surprising facts about genetic influences
In spite of the traditional belief of male-pattern baldness, which explains that the mother whose father is bald will pass the baldness gene onto her son, recent research has proven that genes of such hair condition can be inherited from either the mother or father.
Big eyes, prominent nose, thick lips, and long eyelashes are dominant traits. And while straight hair is dominant for Asians, the opposite applies for populations of other continents. It has also been proven that quirky features such as dimples, gapped front teeth, and crooked nose are almost always hereditary.
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Review Date: March 15, 2017 | Last Modified: March 15, 2017
In the Genes: Where Baby’s Looks Come From http://www.parents.com/getting-pregnant/genetics/tests/baby-looks /
Genetics and Your Baby http://www.parents.com/getting-pregnant/genetics/genetics-and-your-baby/
IT’S IN THE GENES https://www.babble.com/pregnancy/its-in-the-genes/