Test Your Knowledge On Dominant Traits!

Explanation
Red hair is not a dominant trait because it is a result of a recessive gene. In order for an individual to have red hair, they must inherit two copies of the recessive gene, one from each parent. Brown eyes, curly hair, and freckles can all be dominant traits, meaning they only require one copy of the gene to be expressed. Therefore, red hair is the only option that is not a dominant trait.

Explanation
Dimples are considered a dominant trait because they are often inherited from one or both parents who have dimples. This means that if at least one parent has dimples, there is a higher chance that their child will also have dimples. However, it is important to note that not all individuals with dimples will pass on this trait to their children, as there are other genetic factors involved in determining the presence of dimples.

Explanation
Brown eye color is considered a dominant trait because it is more common and tends to overpower other eye colors in terms of inheritance. This means that if one parent has brown eyes and the other has a different eye color, the chances of their child having brown eyes are higher. In contrast, blue, green, and hazel eye colors are generally considered recessive traits, meaning they are less common and can be overshadowed by the dominant brown eye color.

Explanation
Thin lips are a recessive trait because they require two copies of the gene for thin lips to be expressed. If an individual has one copy of the gene for thin lips and one copy of the gene for full lips, the dominant trait (full lips) will be expressed, masking the recessive trait (thin lips). Therefore, thin lips are only expressed when an individual has two copies of the gene for thin lips, making it a recessive trait.

Explanation
Attached earlobes are a recessive trait, meaning that the gene for attached earlobes must be inherited from both parents in order for an individual to have attached earlobes. If an individual inherits the dominant gene for free earlobes from one parent, they will have free earlobes. Therefore, if attached earlobes are a recessive trait, the statement "Attached earlobes are a recessive trait" is true.

Explanation
Dark hair is a dominant trait because it is more likely to be expressed in the presence of other hair color or style genes. This means that if an individual has one copy of the dark hair gene, they are more likely to have dark hair regardless of the presence of other hair color or style genes. In contrast, blonde hair and baldness are recessive traits, meaning they are less likely to be expressed unless an individual has two copies of the respective genes. Straight hair does not determine dominance as it can be expressed in combination with other hair types.

Explanation
Nearsightedness is a dominant trait. This means that if an individual inherits even one copy of the gene associated with nearsightedness, they will exhibit the trait. In contrast, a recessive trait would only be expressed if an individual inherits two copies of the gene. Therefore, the fact that nearsightedness is dominant suggests that it only takes one copy of the gene to cause nearsightedness.

Explanation
Right-handedness is considered a dominant trait because it is more common in the population and is typically expressed when an individual has at least one copy of the dominant allele for right-handedness. In contrast, the recessive allele for left-handedness is less common and only expressed when an individual has two copies of the recessive allele. This means that even if one parent is left-handed, the child is more likely to be right-handed because the dominant allele for right-handedness is more prevalent.

Explanation
If a person can roll their tongue, it means they have inherited the dominant trait. Dominant traits are those that are expressed in an individual even if they have only one copy of the gene for that trait. In the case of tongue rolling, the ability to do so is determined by a dominant gene. This means that if a person has at least one copy of the gene for tongue rolling, they will be able to roll their tongue.

Explanation
The statement suggests that people whose big toe is the longest have inherited a dominant trait. However, this is not supported by scientific evidence. The length of the big toe is determined by a combination of genetic and environmental factors, and there is no dominant or recessive trait associated with it. Therefore, the given statement is false.