Large-scale mutations. 1  Copy number variation (CNV) is a type of mutation where large chunks of DNA are inserted, repeated or lost. 2  Duplication of genes. 3  Deletions of large regions of the chromosome. 4  Loss of one copy of a gene in an organism that previously had two copies.  Loss of both copies of the same gene.
Tulips are spring-blooming perennials that grow from bulbs. Depending on the species, tulip plants can be between 4 inches (10 cm) and 28 inches (71 cm) high. The tulip's flowers usually bloom on scapes with leaves in a rosette at ground level and a single flowering stalk arising from amongst the leaves.
There are 15 categories of tulips, differentiated by flower shape and bloom time. 1  Single Early - Cup-shaped with one flower per short stem. 2  Double Early - More than the usual number of petals, with a fluffy appearance. 3  Triumph - Cross between early and late singles. 4  Darwin Hybrid - Cross between Darwin and the Fosteriana.