In 1998 the Angiosperm Phylogeny Group published a phylogeny for flowering plants based on an analysis of DNA sequences from most families of flowering plants. As a result of this work, many questions, such as which families represent the earliest branches of angiosperms, have now been answered. Investigating how plant species are related to each other allows botanists to better understand the process of evolution in plants. Despite the study of model plants and increasing use of DNA evidence, there is ongoing work and discussion among taxonomists about how best to classify plants into various taxa. Technological developments such as computers and electron microscopes have greatly increased the level of detail studied and speed at which data can be analysed. COUNT 4
QSN1 What was the first plant grouping based on DNA sequencing? ANS1 flowering plants QSN2 What can be learned from DNA sequencing of plants? ANS2 evolution in plants QSN3 How has technology improved the study of botany? ANS3 greatly increased the level of detail QSN4 What have scientists learned about angiosperms from DNA sequencing? ANS4 which families represent the earliest branches