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.
Tulips have long been a popular selection for gardens and cut-flower arrangements. There are about 150 tulip species that come in dozens of colors and shades. With a little effort and know-how, even beginning gardeners will find tulips are easy to grow.ime Frame. Tulips are known as a spring flower, and most tulips do bloom in spring. But different varieties bloom at different times, and there are early, mid-and late bloomers.