Can You Guess if These Genetic Traits are Dominant or Recessive?

By: Isadora Teich
Estimated Completion Time
2 min
Can You Guess if These Genetic Traits are Dominant or Recessive?
Image: Shutterstock

About This Quiz

Genetics is a tricky and fascinating field. In fact, every part of you comes down to your genetics! Test if you know your dominant traits from recessive ones with this HowStuffWorks quiz!
Is red hair a dominant trait?
Yes
No
Red hair is a recessive trait caused when a person has two copies of the mutated MC1R gene on their 16th chromosomes. Only 1-2% of the global population are red heads.

Advertisement

Dark hair is a _______ trait.
Dominant
This trait is among one of the most common features on earth and is thought to be the original hair color of humans. Black and brown hair are found in all people of all backgrounds and ethnicities, ranging from Asian to African to Latin American to European.
Recessive

Advertisement

Are brown eyes dominant or recessive?
Recessive
Dominant
Brown eyes are a dominant trait. Over half of the world's population has brown eyes, as the majority of people from Asia and Africa have this eye color.

Advertisement

Is tone deafness recessive?
No
Tone deafness is actually a dominant gene and the ability to carry a tune expertly is recessive. However, the majority of people can still carry a very basic tune.
Yes

Advertisement

Straight hair is a _______ trait.
Dominant
Recessive
Curly hair is a dominant trait, however, it is more prevalent in some populations than others. For example, it is less common among Caucasians.

Advertisement

Is farsightedness dominant or recessive?
Dominant
This is a common vision problem, in which people can see things from afar, but not so well up close. It's thought that over half of Americans are farsighted, even if it is only to a small degree.
Recessive

Advertisement

Nearsightedness is a ________ trait.
Dominant
Recessive
It's thought that about 30% of Americans are farsighted to some degree. This common condition makes objects up close appear clearly, but far away objects appear blurry.

Advertisement

Are widow's peaks dominant or recessive?
Dominant
A widow's peak is a V-shaped patch of hair where the hairline meets the forehead. It gets its name from the old myth that a woman with one would outlive her husband.
Recessive

Advertisement

Which kind of trait are dimples?
Dominant
While technically a medical deformity, dimples have been considered signs of luck and beauty in cultures around the world for centuries. About a fifth of the world's population has them.
Recessive

Advertisement

What kind of trait are freckles?
Dominant
This dominant trait only becomes visible after sunlight exposure. No baby is born with freckles.
Recessive

Advertisement

What kind of gene leads to cleft chins?
Dominant
Recessive
Those with cleft chins have inherited a recessive gene. These genes are more common in European populations.

Advertisement

Curly hair is a __________ trait.
Dominant
While it is thought that our species originally had straight hair, we evolved into curls. The trichohyalin gene is the one responsible for creating curly hair.
Recessive

Advertisement

Is the gene for right handed-ness dominant or recessive?
Recessive
Dominant
Most of the world's population carries this gene. It is estimated that about 90% of the world is right-handed.

Advertisement

Is the gene for left-handedness recessive or dominant?
Dominant
Recessive
It's estimated that only about 10% of the entire human population has this gene and is left-handed. Humans have been this way for thousands of years.

Advertisement

The B positive blood type is ____________.
Dominant
When it comes to human blood, there are A, B and O genes. A and B are dominant, while O is recessive.
Recessive

Advertisement

Are green eyes a recessive trait?
Yes
This recessive trait is actually the result of a genetic mutation. It's the rarest eye color on earth, as only about 2% of the global population has green eyes.
No

Advertisement

Are double eyelashes a dominant trait?
Yes
This transcription error on the 16th chromosome results in extra eyelashes growing in the waterline of the eye. This is a dominant trait, meaning that all it takes is one parent with it to virtually guarantee a child will have it too.
No

Advertisement

Is having five fingers a recessive or dominant trait?
Dominant
Recessive
Despite the vast majority of people having 5 fingers, this trait is actually recessive, while having 6 fingers is dominant. It's thought that since 5 fingers were considered more attractive, it led to more of these people finding partners, which made this recessive trait more common.

Advertisement

Blue eyes are the result of ________ genes.
Dominant
Recessive
This recessive genetic combination is relatively rare globally, but prevalent in certain groups. While less than 10% of the world's whole population has blue eyes, in the European country of Estonia, over 90% of the people are blue-eyed.

Advertisement

Is being allergic to poison ivy a dominant trait?
Yes
No
Studies show that 15% of people are not allergic to poison ivy. These people are actually displaying a dominant genetic trait.

Advertisement

Is shortness a dominant or recessive trait?
Dominant
Shortness is a dominant gene and tallness is recessive. This recessive gene is more common in women and less common in men.
Recessive

Advertisement

Is having type O blood a dominant gene?
Yes
No
Type O blood is a universal donor, meaning that it can coexist with any other blood type. While it's a recessive gene, it is not rare, as almost half of all African Americans have it.

Advertisement

Hairy hands are a __________ trait.
Dominant
Hairy hands are a dominant trait, however, they are more or less prevalent in some populations. While African Americans often have hairier knuckles, Eskimoes have almost none.
Recessive

Advertisement

Is colorblindness dominant?
Yes
No
This recessive trait affects one in 12 men worldwide in some form, and many others are carriers. It affects almost 5% of the global population.

Advertisement

Are thin lips a recessive trait?
No
Yes
Thin lips are recessive while fuller lips are genetically dominant. Their prevalence varies by community.

Advertisement

The ability to roll your tongue is the result of a ____________ gene.
Dominant
Those who can roll their tongue by raising the sides together have inherited a dominant gene. Those who cannot do this have inherited a recessive gene.
Recessive

Advertisement

Is albinism a dominant trait?
Yes
No
Albinism is a recessive trait. This rare condition, in which melanin lacks in hair, skin and eyes, affects roughly 1 in 20,000 people globally.

Advertisement

Is congenital deafness dominant?
No
Congenital deafness is recessive, which is why one or two deaf biological parents does not guarantee that a child will also be deaf. About 70 million deaf people around the world speak sign language as their first language.
Yes

Advertisement

Are bent pinkies recessive or dominant?
Dominant
People who can bend their pinkie fingers inward toward their fourth finger are actually expressing a dominant genetic trait. This dominant gene causes the distal section of that finger to bend.
Recessive

Advertisement

The cleft chin is the result of a _______ gene.
Recessive
Dominant
Those with a cleft chin have a dominant gene. These without one have a recessive gene.

Advertisement

Is having no body hair a dominant or recessive trait?
Dominant
Recessive
Body hair is a genetically dominant trait. However, the presence and distribution of body hair can differ between ethnicities.

Advertisement

Are long eyelashes a dominant trait?
Yes
Those with long eyelashes have a dominant trait. Those with short eyelashes have a recessive trait.
No

Advertisement

Are broad noses a dominant or recessive trait?
Recessive
Dominant
Broad noses are ultimately a dominant trait while narrow noses are recessive. However, average nose width can often vary by ethnicity.

Advertisement

Is astigmatism a dominant or recessive trait?
Dominant
Astigmatism is a dominant trait. If you have normal vision, you have a recessive genetic trait.
Recessive

Advertisement

The O blood types are comprised of ________ genes.
Dominant
Recessive
O blood types are comprised of recessive genes but are still the most common blood types in America. 38% of the population is O+ and 7% is O-.

Advertisement

You Got:
/35
Featured