Which of the following organisms is a social insect?
Grasshopper
Honey bee
Butterfly
Housefly
Correct answer is B
No explanation has been provided for this answer.
Which of the following is not a correct base pairing on the DNA strand?
Adenine, Thymine
Cytosine, Guanine
Guanine, Cytosine
Uracil, Thymine
Correct answer is D
No explanation has been provided for this answer.
In a living cell, factors which are responsible for inheritance are located
on the nuclear membrane
on the nucleolus
on the chromosomes
in the nucleoplasm
Correct answer is C
No explanation has been provided for this answer.
Which disease is sex-linked and mainly afflicts male offspring?
Sickle cell anaemia
Haemophilia
Diabetes
Malaria
Correct answer is B
No explanation has been provided for this answer.
If two parents are sickle cell carriers then their genotypes would be
HbA HbA and HbS HbS
HbS BbS and HbS BbS
HbA HbS and HbA HbS
HbA HbA and HbA HbA
Correct answer is C
No explanation has been provided for this answer.