Inheritance, variation and evolution

1. All species of living things have evolved from simple life forms that first developed more than 3 billion years ago. (7, 9)
4. The remains of organisms from millions of years ago, which are found in rocks. (7)
5. A polymer made up of two strands forming a double helix (3)
8. The entire genetic material of an organism (6)

2. A change in the inherited characteristics of a population over time through a process of natural selection which may result in the formation of a new species. (9)
3. The process by which humans breed plants and animals for particular genetic characteristics. (9, 8)
6. Which structure contains DNA? (10)
7. A process which involves modifying the genome of an organism by introducing a gene from a different organism to give a desired characteristic. (7, 11)

Get Revising