What is the set of alleles that an individual possesses?
a. a gene
b. a genotype
c. a genome
d. a genus

6. in the dna double helix, how are the two strands of dna held together? a. chemical bonds between base pairs hold the two strands of dna together. b. hydrogen bonds between the base pairs hold the two strands of dna together. c. hydrogen bonds between sugar groups and phosphate groups hold the two strands of dna together. d. chemical bonds between sugar groups and phosphate groups hold the two strands of dna together.

There are only about 250,000 known fossil species. true or false

What will happen if two of the base pairs of the stand of the dna are switched