DNA and histone proteins are packaged into structures called chromosomes

A chrysalis is an intermediate or pupal stage in the life history of many insects, during which the larva undergoes metamorphosis to produce the features characteristic of an adult. The chrysalis is usually covered with a hard case, but some pupae, such as that of the silk moth, spin a silk cocoon around themselves. Within the chrysalis feeding and locomotion stop and the final stages of development take place.