Hybrid tea flowers are well-formed with large, high-centred buds, supported by long, straight and upright stems. Each flower can grow to 8-12.5 cm wide. Hybrid teas are the world's most popular type of rose by choice due to their color and flower form.Their flowers are usually borne singly at the end of long stems which makes them popular as cut flowers.ach flower can grow to 8-12.5 cm wide. Hybrid teas are the world's most popular type of rose by choice due to their color and flower form. Their flowers are usually borne singly at the end of long stems which makes them popular as cut flowers.
Gene Pool, Alleles and Variation in the Population. Genes have many different forms (alleles). This forms the basis of the study of population genetics. Populations are made up of members of the same species which interbreed.ecombination (Crossing Over). This is the exchange of genetic material between adjacent chromatids on the homologous chromosomes. This random exchange of DNA results in many new combinations of alleles on chromosomes, creating great potential for variation.
Characteristics are passed on from one generation to another within a species through the genetic code of the parents. This genetic code is called DNA. DNA The blueprint that is passed on from the parents to the offspring is found in a molecule of the cell nuclei.This molecule, desoxyribonucleic acid, (DNA) is the inherited material responsible for variation.he arrangement of these four chemicals creates the code that the cells are able to interpret. This is the genetic code of the organism. Chromosomes DNA contains all the instructions which create the organism's characteristics.