WAEC Past Questions and Answers - Page 3393

16,961.

The diagram below is an illustrating of a cross between plants ! and B of the same species. Study it to answer the question below.

The process that gave rise to the F1 generation is 

A.

self fertilization

B.

cross fertilization

C.

out-breeding

D.

test cross

Correct answer is B

No explanation has been provided for this answer.

16,962.

The diagram below is an illustration of a cross between plants A and B of the same species. Study it and answer the question below.

If the F1 generation are plants with high yield and resistance, the genotype of the F1 generation plants would be

A.

YYRR

B.

YyRr

C.

yyRr

D.

yyrr

Correct answer is A

No explanation has been provided for this answer.

16,963.

Which of the following diseases can be inherited?

A.

Pneumonia

B.

Whooping cough

C.

Sickle cell anemia

D.

Malaria

Correct answer is C

No explanation has been provided for this answer.

16,964.

Which of the following statements about chromosomes is correct?

A.

All the chromosomes of a species are the same shape

B.

The number present in a specie is constant

C.

They are neatly arranged in a cytoplasm

D.

They bear ribosomes on their outer membranes

Correct answer is B

No explanation has been provided for this answer.

16,965.

Measurements of height and weight of students in a class show

A.

discontinuous variation

B.

continuous variation

C.

shortness is more prevalent

D.

fatness is less prevalent

Correct answer is B

No explanation has been provided for this answer.