Medium3 marksStructured
Cell BiologyHigherreproductionmitosismeiosis

AQA GCSE · Question 05.4 · Cell Biology

Table 3Sexual reproductionAsexual reproductionInvolves two parentsInvolves one parent12

The malarial protist reproduces sexually and asexually during a life cycle. Complete Table 3 to give three differences between sexual reproduction and asexual reproduction. One difference has been completed for you.

How to approach this question

Think about the key features of each type of reproduction. - **Gametes:** Are sex cells (like sperm and egg) involved? - **Genetics:** Are the offspring identical to the parent or do they show variation? - **Cell Division:** Which type of cell division is associated with each (mitosis or meiosis)? For each point, state the difference for both sexual and asexual reproduction.

Full Answer

Sexual and asexual reproduction are two different strategies for producing offspring. * **Parents:** Sexual reproduction involves two parents contributing genetic information, while asexual reproduction involves only one parent. * **Gametes:** Sexual reproduction requires the fusion of two specialised sex cells called gametes (e.g., sperm and egg) in a process called fertilisation. Asexual reproduction does not involve gametes. * **Genetic Variation:** Because sexual reproduction combines genes from two parents, it produces offspring with genetic variation. In asexual reproduction, the offspring are genetically identical to the parent, so they are clones. * **Cell Division:** Sexual reproduction involves meiosis to produce the haploid gametes. Asexual reproduction in eukaryotes involves only mitosis, where a cell makes an identical copy of itself.

Common mistakes

✗ Mixing up the characteristics, e.g., saying asexual reproduction causes variation. ✗ Giving incomplete comparisons, e.g., saying "involves meiosis" for sexual but not stating the corresponding point for asexual ("involves mitosis").

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