◈ Oracle PrepSign Up Free
O-LevelBiologyGenetics & Variation5090/12 · Oct/Nov 2022 · Q371 Mark

What is the correct order for the sizes of the pieces of genetic material shown in the table, from smallest to largest?

Asmallest: gene, middle: molecule of DNA, largest: chromosome
Bsmallest: molecule of DNA, middle: gene, largest: chromosome
Csmallest: chromosome, middle: molecule of DNA, largest: gene
Dsmallest: gene, middle: chromosome, largest: molecule of DNA

✓ Correct answer

A: smallest: gene, middle: molecule of DNA, largest: chromosome

Practise more questions on this topic

Oracle Prep sorts past-paper questions by topic, so you can drill Genetics & Variation and see which topics are most likely to come up next.

Sign up free →

About this question

Topic
Genetics & Variation, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, Oct/Nov 2022 Paper 1 Variant 2, question 37.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

Related Biology questions

Genetics & VariationMay/June 20111m

In the commercial manufacture of insulin, a human gene is inserted into which of these?

Genetics & VariationMay/June 20121m

In the female reproductive cycle, which sequence of events could occur in 28 days?

Genetics & VariationMay/June 20121m

Bacteria can be genetically engineered to produce human insulin by adding a human insulin gene to the bacterial DNA. …

Coordination & ResponseMay/June 20121m

The table shows some of the possible effects of three drugs. Which combination of effects is correct?

Ecology & EnvironmentMay/June 20121m

Which statement describes a problem of using antibiotics?

Ecology & EnvironmentMay/June 20121m

Which method of control would not be effective against the spread of the malarial parasite?

← Browse all past-paper questions

© 2026 Oracle Prep