Biology Past Questions and Answers

If the pink colour of a petal is dominant over white what would be the colour of the flower of the F generation when a pure pink flowered plant is crossed with a white flowered plant?

A Purple
B Pink
C White
D Yellow

Question 992:

If two parents are sickle cell carriers then their genotypes would be

A Hb^A Hb^A and Hb^S Hb^S
B . Hb^S Bb^S and Hb^S Bb^S
C Hb^A Hb^S and Hb^A Hb^S
D Hb^A Hb^A and Hb^A Hb^A

Question 993:

Which disease is sex-linked and mainly afflicts male offspring?

A Sickle cell anaemia
B Haemophilia
C Diabetes
D Malaria

Question 994:

In a living cell, factors which are responsible for inheritance are located

A On the nuclear membrane
B On the nucleolus
C On the chromosomes
D In the nucleoplasm

Question 995:

Which of the following is not a correct base pairing on the DNA strand?

A Adenine, Thymine
B Cytosine, Guanine
C Guanine, Cytosine
D Uracil, Thymine