Final answer:
A group that contains an ancestor and all of its descendants is H. monophlyetic group or claade
Step-by-step explanation:
A monophyletic group is a group that contains an ancestor and all of its descendants. It is also known as a clade. Monophyletic groups are important in phylogenetics, which is the study of evolutionary relationships between organisms. They allow scientists to understand the patterns of evolution and the shared ancestry of different species.
For example, let's say we are studying the evolution of mammals. A monophyletic group in this context could be all the descendants of a common ancestor that is also the ancestor of all mammals. This would include all mammals, such as humans, cats, and whales, and exclude any other organisms that do not share this common ancestor.
So therefore a monophyletic group, also known as a clade, is a group that contains an ancestor and all of its descendants. It is important in phylogenetics to understand evolutionary relationships between organisms. The correct answer is H. monophlyetic group or claade