WAEC Biology Past Questions & Answers - Page 246

1,226.

Which of the following inherited conditions usually shows incomplete dominance?

A.

Sickle cell anaemia

B.

Haemophilia

C.

Tongue rolling ability

D.

Baldness

Correct answer is D

No explanation has been provided for this answer.

1,227.

If a cross between a red-flowered plant and a white-flowered plant produced red-flowered plants, the result can be described as an example of

A.

partial recessiveness

B.

dominance

C.

incomplete dominance

D.

out-breeding

Correct answer is B

No explanation has been provided for this answer.

1,229.

What is the probability of producing a child of blood group O by a woman of blood group O and a man of blood group A?

A.

25%

B.

5%

C.

75%

D.

100%

Correct answer is A

No explanation has been provided for this answer.

1,230.

The character that is manifested in an organism in the presence of a contrasting character is known as

A.

genotype

B.

phenotype

C.

recessive

D.

dominant

Correct answer is D

No explanation has been provided for this answer.