Tags
20.genome
19.nonvirulent
18.virulent
17.streptococcus pneumonia
16.genetic transformation
15.chromosomes
14.inheritance
13.gene function
12.genetic code
11.replication
10.mutation
9.cell
8.traits
7.offspring
6.frederick griffith
5.gene
4.dna
3.requirements for it
2.hereditary material .
1.heredity
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