People with sickle-cell anaemia have haemoglobin
...People with sickle-cell anaemia have haemoglobin
S and are homozygous recessive
A and are heterozygous recessive
S and are heterozygous recessive
A and are homozygous recessive
Correct answer is A
No explanation has been provided for this answer.
Which of the groups of structures listed below contains chloroplast? ...
The part of the brain that controls heart beat and breathing is the ...
How many food chains are in the diagram? ...
The structure of the ear that is responsible for balancing is the ...
The autonomic nervous system consists of neurons that control the ...
Evidence for evolution include the following except ...
Which of the following statements is not true of the osmotic process? ...