DNA – The Molecule of Life
7 Topics | 6 Quizzes
Chromosomes, Diploid Cells and Haploid Cells
7 Topics | 6 Quizzes
Cell Division – DNA Replication, Mitosis and Meiosis
5 Topics | 4 Quizzes
Asexual and Sexual Reproduction
5 Topics | 4 Quizzes
Genes, Genotype and Phenotype
7 Topics | 6 Quizzes
Dominance, Incomplete Dominance and Codominance
4 Topics | 3 Quizzes
Sex-Linked Inheritance
5 Topics | 4 Quizzes
Punnett Squares
5 Topics | 4 Quizzes
Mendelian Genetics
6 Topics | 5 Quizzes
Pedigree Charts
10 Topics | 9 Quizzes
Genetic Mutation
6 Topics | 5 Quizzes
Genetic Variation and Change
8 Topics | 7 Quizzes
Evolution – The Process
9 Topics | 8 Quizzes
Evolution – The Evidence
6 Topics | 5 Quizzes
5 | DNA Double Helix
5 | DNA Double Helix
DNA Double Helix
- Once joined, the two strands of DNA twist around each other, forming a structure known as a double helix.
- This resembles a twisted ladder, where the ‘rails’ consist of alternating sugars and phosphates, and the ‘rungs’ consist of base pairs.
A DNA molecule has a twisted structure known as a double helix.
Quizzes