WAEC Past Questions and Answers - Page 3425

17,121.

A man whose blood group is heterozygous B is married to a woman whose blood up is also heterozygous B. 

Which of the following statements is correct about the blood group of their four offspring?

A.

Three of them belong to blood group B

B.

Three of them belong to blood group O

C.

None of them belongs to blood group O

D.

Two of them belong to blood group B

Correct answer is A

No explanation has been provided for this answer.

17,122.

In a complete dominance monohybrid cross between a pure breeding yellow-flowered plant Y and a pure breeding white-flowered plant y, the result of the first filial generation is _________

A.

50% yellow flowers

B.

75% yellow flowers

C.

all yellow flowers

D.

all white flowers

Correct answer is C

No explanation has been provided for this answer.

17,123.

Which of the following nucleotides is not found in the DNA molecules?

A.

Adenine

B.

Cytosine

C.

Guanine

D.

Uracil

Correct answer is D

No explanation has been provided for this answer.

17,124.

The process is called_______

A.

replication

B.

cell maturation

C.

crossing over

D.

mutation

Correct answer is A

No explanation has been provided for this answer.

17,125.

The diagram below is an illustration of a process occurring in a living animal cell. Study it and answer this question

The process occurs in the _______

A.

Nucleus

B.

Mitochondrion

C.

Golgi body

D.

Cytoplasm

Correct answer is A

No explanation has been provided for this answer.