Uniqueness of DNA (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which group of individuals cannot be uniquely identified using DNA databases?
Which group of individuals cannot be uniquely identified using DNA databases?
Identical twins
What does the human genome include?
What does the human genome include?
22 autosomes, X, Y, & mitochondrial DNA
How many base pairs are in one kilobase pair (kbp)?
How many base pairs are in one kilobase pair (kbp)?
10³ bp
Approx. how many genes do humans have compared to mice?
Approx. how many genes do humans have compared to mice?
~21000 vs ~23000
What are exons?
What are exons?
Coding sequences translated into protein
The human haemoglobin β-polypeptide gene has 438 bp of exons. How many amino acids does it code for?
The human haemoglobin β-polypeptide gene has 438 bp of exons. How many amino acids does it code for?
146
Where are promoters located relative to genes?
Where are promoters located relative to genes?
Upstream (towards the 5' end)
What is the function of promoters?
What is the function of promoters?
Binding sites for RNA polymerase
What is the origin of mitochondrial and chloroplast DNA?
What is the origin of mitochondrial and chloroplast DNA?
Ancient prokaryotes via endosymbiosis
What is the total size of the Arabidopsis thaliana nuclear genome?
What is the total size of the Arabidopsis thaliana nuclear genome?
115.4 Mbp