The images show a normal red blood cell and a red blood cell from someone who has sickle cell disease - Edexcel - GCSE Biology - Question 1 - 2013 - Paper 1
Question 1
The images show a normal red blood cell and a red blood cell from someone who has sickle cell disease. Sickle cell disease is a genetic disorder caused by two recess... show full transcript
Worked Solution & Example Answer:The images show a normal red blood cell and a red blood cell from someone who has sickle cell disease - Edexcel - GCSE Biology - Question 1 - 2013 - Paper 1
Step 1
Complete the sentence
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Answer
An individual with sickle cell disease is said to be:
D homozygous recessive.
This is because sickle cell disease occurs in individuals who have two recessive alleles for the gene controlling hemoglobin production.
