A bacterium grows and reproduces well in a nutrient solution. The conditions in the solution remain suitable and unchanged. The bacterium reproduces by binary fission.
Which outcome of binary fission helps the descendants continue to grow and reproduce well in these conditions?
The nutrient solution usually changes the alleles copied into each new cell.
The new cells usually retain the parent cell's successful combination of alleles.
The new cells usually receive alleles from two parent cells during fertilisation.
The parent cell usually divides twice to produce four genetically different cells.
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.