Gene Power: Dominant and Recessive Traits Explained

The video tutorial explains the mechanisms of inheritance, focusing on the concepts of dominant and recessive genes. Dominant genes are powerful and can override recessive genes, which are weaker and only show their characteristics if both genes in a pair are recessive. The tutorial uses examples like eye color and hair type to illustrate these concepts. It also provides a list of traits, identifying which are dominant and which are recessive, such as brown eyes being dominant over blue eyes, and curly hair being dominant over straight hair.

What is the primary characteristic of a dominant gene?

• It is hidden in the presence of a recessive gene.

• It is always visible in the phenotype.

• It is weaker than a recessive gene.

• It is only visible when paired with another dominant gene.

In the context of eye color, what does a capital letter 'B' represent?

• Dominant blue eye gene

• Recessive brown eye gene

• Dominant brown eye gene

• Recessive blue eye gene

If a person has one brown eye gene and one blue eye gene, what color will their eyes be?

• Hazel

• Brown

• Green

• Blue

What happens when both genes in a pair are recessive?

• The dominant trait is expressed.

• No trait is expressed.

• A new trait is formed.

• The recessive trait is expressed.

Which of the following is a dominant trait?

• Left-handedness

• Straight hair

• Blue eyes

• Curly hair

Which hair color is considered dominant?

• Red

• Black

• Brown

• Blonde

Which of the following is a recessive trait?

• Right-handedness

• Curly hair

• Dark skin

• Colorblindness

Which skin pigment condition is recessive?

• Freckles

• Albino

• Dark skin

• Tanned skin

What is the dominant trait for earlobes?

• Free earlobes

• Attached earlobes

• No earlobes

• Pointed earlobes

What does it mean if a person can roll their tongue?

• They have a dominant gene for tongue rolling.

• They have a mutated gene for tongue rolling.

• They have a recessive gene for tongue rolling.

• They have no gene for tongue rolling.