key words for B2 T1 4.0 / 5 based on 2 ratings ? BiologyDNA and inheritanceCells, tissues and organsGCSEEdexcel Created by: John@11gCreated on: 31-03-15 15:55 958471236 Across 1. a catalyst produced by a living thing (7) 6. a single division to make two identical cells (7) 7. two versions of each chromosome (7) 8. one copy of each chromosome (7) 9. moving useful genes from one oragnism to another (7, 11) Down 2. a fertilized egg (6) 3. involves two divisions to make four unique cells (7) 4. "sex cells"- have half the usual number of chromosomes (7) 5. cells in the embryo that are all the same (9, 4, 5)
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