Across
- 3. some are inherited and some are shaped by the environment
- 7. cells divide to make reproductive cells
- 9. all instructions for development
- 11. a copy of a gene
- 12. when a dominant gene is present it will be __________
- 13. a natural process in which DNA changes during reproduction
- 15. this increases genetic diversity
- 20. reproductive cells join to make a new individual
- 21. a set of instructions for building an entire organism
Down
- 1. we have two __________ of DNA that are joined by complementary base pairs
- 2. genes are a set of instructions for developing a specific _________________
- 4. recessive alleles are expressed when _____ are present
- 5. these control inherited traits
- 6. reproducing with out a partner is this type of reproduction
- 8. an organized profile of a person's chromosomes
- 10. these cells have 23 chromosomes each
- 14. cells divide to make more cells
- 16. a person who has one dominant and one recessive gene
- 17. a human being has 46 of these
- 18. the presence of an x and a y chromosome creates a ________
- 19. in the process of meiosis how many reproductive cells are created