Reproduction, the genome and gene expression - Edexcel Sexual reproduction

This unit covers the differences between sexual and asexual reproduction, the structure of DNA and its role in making proteins, mutations and their effects and how characteristics are inherited.

Part ofCombined ScienceGenetics

Sexual reproduction

involves the joining of two sex cells, or during . Organisms produced by sexual reproduction have two parents and are genetically similar to both but not identical to either.

Asexual reproduction only involves one parent so there is no joining of sex cells during fertilisation. Organisms produced by asexual reproduction are genetically identical to each other and their parent. They are clones.

Two bulbs. First shows flower bud and small lateral bulb. Second shows same bulb at later date. Remains of leaves at top of flower bud and a larger lateral bulb from which the new plant will grow.
Figure caption,
A small lateral bud develops from the bulb of this year’s plant. It will continue to grow the following year.