Mendel's ideas about inheritance were not widely accepted until many years after his death.
His ideas became accepted after scientists observed chromosomes during cell division.
Which statement explains why these observations supported Mendel's ideas?
Chromosomes were seen to blend together, just as Mendel said factors blended.
Chromosomes were seen in pairs that separate into gametes, like Mendel's factors.
Chromosomes were seen to change during division, so factors could change too.
Chromosomes were seen only in body cells, so factors stayed in the parent plant.
186 exam-style questions on OCR GCSE Biology 5.1 Inheritance, covering 5.1.1 The genome, 5.1.2 Environment and phenotype, 5.1.3 Variants and mutations, 5.1.4 How genetic variants influence phenotype, 5.1.5 Asexual and sexual reproduction, 5.1.6 Haploid and diploid, 5.1.7 Meiotic cell division, 5.1.8 Single gene inheritance, 5.1.9 Predicting single gene crosses, 5.1.10 Sex determination, 5.1.11 Multiple gene inheritance, and 5.1.12 Development of our understanding of genetics. Each one has a worked solution and a mark scheme showing where the marks go.