All organisms inherit their characteristics/traits from their parents. In sexual reproduction, each parent contributes deoxyribonucleic acid (DNA) in gametes to provide the instructions for the development and expression of traits in their offspring. The sections of DNA which control the expression of traits are called .

Answers to mastering biology drag the labels to their appropriate locations to complete the punnett squares for morgan's reciprocal cross. drag blue labels onto the blue targets to indicate the genotypes of the parents and offspring. drag pink labels onto the pink targets to indicate the genetic makeup of the gametes (sperm and egg). labels can be used once, more than once, or not at all. hints