Gene Expression

Multiple Select

Which of the following represent alleles, not genes?

• Hair colour

• Blue eyes

• Height

• Dark skin

Multiple Choice

A person carries the alleles for both broad lips and thin lips. When measured, the person was categorised as having broad lips.

Which of the alleles is recessive?

• Broad lips

• Thin lips

• Both

• Neither

Multiple Choice

Black hair is a dominant allele whereas red hair is a recessive allele.

What would be the best way to represent the red hair allele?

• B

• b

• R

• r

Multiple Choice

Blue eyes are dominant over green eyes. A person carries both alleles. What would be this person's phenotype?

• Blue eyes

• Green eyes

• Blue and green eyes

Multiple Choice

Green coloured peas are dominant over yellow peas. A certain pea plant contains both the green and yellow allele. What is this plant's genotype?

• Green

• GY

• Gy

• Gg

Multiple Choice

Having dimples (D) is a dominant allele, whereas not having them (d) is a recessive allele.

Which of the following genotypes will result in a person having no dimples?

• DD

• Dd

• dd

• It is impossible

Poll

How well did you understand this lesson?

• 1 (not very well)

• 2

• 3

• 4

• 5 (very well)