1. traits
2. genes
3. DNA
4. environment
5. 23
6. haploid
7. half
8. fertilization
9. 46
10. zygote
11. half
12. randomly
13. different
Hope this helps a little :)
<span>Shivering to warm up illustrates the </span>adaptation to environment characteristics of the life.<span />
<span>Because DNA contains the genes that instruct the cells in how to build proteins. The genetic codes are the blueprints for each protein, and proteins control all biochemical reactions in the cell (as enzymes) and also form the structure of the cell, which becomes the structure of the entire organism. Without knowing how to build proteins, higher organisms would never have evolved.</span>