What in your dna are responsible for determining the traits that are expressed in an organism 1. mutagens
2. replication
3. cell
4. gametes
5. genes
6. meiosis

Genes

Explanation:

Gene. A segment of a DNA molecule (a sequence of bases) that codes for a particular protein and determines the traits (phenotype) of the individual. A gene is the basic unit of heredity in a living organism.

i think it is dna, i'm not totally sure but i think it might be.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands