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.
sexual reproductionThe formation of a new organism by combining the genetic material of two organisms. involves the joining of two sex cells, or gameteSex cell (sperm in males and ova/eggs in females). during fertilisationThe joining of a male and female gamete.. 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.
Figure caption,
A small lateral bud develops from the bulb of this year’s plant. It will continue to grow the following year.