Which of the following statements about chromosomes is correct?
All the chromosomes of a species are the same shape
The number present in a specie is constant
They are neatly arranged in a cytoplasm
They bear ribosomes on their outer membranes
Correct answer is B
No explanation has been provided for this answer.
Measurements of height and weight of students in a class show
discontinuous variation
continuous variation
shortness is more prevalent
fatness is less prevalent
Correct answer is B
No explanation has been provided for this answer.
Variation which exhibits a wide range from one extreme to the other is
phenotypic variation
discontinuous variation
continuous variation
genotypic variation
Correct answer is C
No explanation has been provided for this answer.
A child that can receive blood donation from anybody belongs to the blood group
O
A
B
AB
Correct answer is D
No explanation has been provided for this answer.
Which of the following substances is not a conservable natural resource?
Mineral
Air
Soil
Water
Correct answer is A
No explanation has been provided for this answer.