The human genome contains about 3 000 000 000 base pairs.
The human genome contains about 20 000 genes.
State what is meant by the term genome.
State what is meant by the term gene.
Calculate the mean number of base pairs in the human genome for each gene.
Give the part of a human cell where most of the genome is found.
44 exam-style questions on Edexcel GCSE Biology 3.2 DNA and protein synthesis, covering 3.2.1 DNA structure as a polymer, 3.2.2 Genome and gene definitions, 3.2.3 Extracting DNA from fruit, 3.2.4 Base order determines protein shape, 3.2.5 Stages of protein synthesis, 3.2.6 Non-coding DNA variants affecting phenotype, and 3.2.7 Coding DNA variants affecting phenotype. Each one has a worked solution and a mark scheme showing where the marks go.