Inherit: What our Child Copied from us, Lets Discuss?

Who does our Child Resemble (Inherit)?

Just like mom’s big and round eyes and dad’s high nose bridge, regardless of appearance or character, children inherit traits from their parents in many ways. Let us understand the mystery of heredity. How do children inherit traits from their parents?

Height

According to statistics, a person's height is 35% inherited from their father and 35% from their mother, with the remaining 30% from their environment. Between both parents, if one of them is shorter than 97% of their peers, the probability of them being tall will be rather low.

Estimated Calculation of Child’s Height:

Son’s Height = (Dad’s Height + Mum’s Height + 13) divided by 2

Daughter’s Height = (Dad’s Height + Mum’s Height - 13) divided by 2

Body Shape

Obesity is affected by heredity more than height. A child’s obesity rate is 80% if their parents are obese; if only 1 of the parent is obese, the child’s obesity rate will be 40%; if both parents are not obese, the child’s obesity rate will only be 9%.

Appearance

Appearance such as skin color, size and shape of a person’s eyes, eyelids, hair color, and body shape are primarily affected by heredity. In case their parents have freckles, the chances of them having freckles are between 50-100%. If their parents have round noses, the chances of them a round nose are between 50-100%. In case one of their parents has a crooked nose, the chances of them a crooked nose is 100%.

If a mother has curly hair and a father has straight hair, they will give birth to a child with wavy hair; if both parents have curly hair, the child will definitely have curly hair; if both parents have straight hair, the child will definitely have straight hair; if both parents have wavy hair, the child will have a 25% chance of being born with wavy or straight hair. If both parents have round eyes, the child will definitely be round-eyed. If only one of the parents have round eyes, the chances of the child being round-eyed will be 13%.

Intelligence

A person’s intelligence is 30% inherited from their father, 30% from their mother and the other 40% is influenced from their environment. However, recent studies have shown that the X chromosome from the mother may influence one’s intelligence. Hence, the mother’s intelligence may have a larger impact on a child’s intelligence.

Personality

Half of a person’s personality is affected by genetics, and the other half is due to their environment. Although research has yet to determine the influencing factors to a person’s personality, we can safely assume that congenital genetic factors do lay the foundations of it.

Double Eyelids

If both parents have double eyelids, chances of a child having double eyelids are 62%. If one of the parents does not have double eyelids, chances of a child having double eyelids will be 43%. If both parents do not have double eyelids, the child will definitely not have double eyelids. Occasionally, parents without double eyelids do conceive a child with double eyelids, as they possess the genetic material within them for double eyelids.

Twins

Genetics play a small part in the ability to conceive fraternal twins. Identical twins are formed when a single fertilized egg is split into two separate eggs. Fraternal twins are conceived from two different eggs that were discharged at the same time during ovulation. A mother who is an identical twin herself would have an equal chance as everyone else conceiving identical twins. However, a mother who is a fraternal twin herself would have a higher chance of conceiving fraternal twins. As for fathers who are fraternal twins themselves, have no influence in conceiving fraternal twins as they have no relation to their wives’ ovulation.

Diseases

Diseases and genetics have a very close relationship. The most common heredity diseases are diabetes and high blood pressure. If either of the parents have diabetes, there will be an 8-15% chance of their children having diabetes, compared to the 3.2-7.7% chance in children from parents without diabetes.

A person will have a 50% chance of having high blood pressure if both their parents suffer from it. However, if both parents do not suffer from high blood pressure, the child will only have a 4% chance of developing it. Another highly heritable disease is cancer. Many other mental illnesses such as genetic, autism, schizophrenia, bipolar disorder, epilepsy are also largely affected by genetics.

Examples of hereditary diseases in ophthalmology are color-blindness, myopia, and strabismus. If either parent has strabismus, there is a 20% chance of the child developing strabismus.

TIP BOX - Hereditary Diseases

Balding

Balding is apparent in men and not in women. There is a very high chance of balding showing up in men, but the chances of it showing up in the female are lower.

Color-Blindness

The genes causing color-blindness exist within the X chromosome. If both the X chromosome in women contains genetic material for color-blindness, they will most definitely be color-blind. However, if only 1 of the X chromosome contains genetic material for color-blindness, it will be passed down to the next generation. Because men only have one X chromosome, they will definitely be color blind if that X chromosome contains genetic material for color-blindness.

Hemophilia

Hemophilia is the disease whereby bleeding is unable to clot naturally. The genetic material for hemophilia also contains within the X chromosome. If men have an X chromosome with hemophilia, they will definitely be suffering from hemophilia. If a woman only has one X-chromosome with hemophilia, they will be known as the original carrier. However, if a mother’s body contains two X chromosome with hemophilia, the fetus will be a stillbirth.

Children inherit various traits from their parents and how they would look when born is always a surprise.

Sandra Henderson
 

Editor-in-chief at Babiology and a proud mother of four passionate about sharing pregnancy and baby growth knowledges

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