Is the tubular-dorsal nervous system of chordates associated to radial or lateral symmetry? How does that explain the complexity level of the nervous system reached by the vertebrate evolutionary branch?

Q: The tree shows one lineage of ornithischian dinosaurs and many lineages of theropod dinosaurs. Some…

A: Ornithischian dinosaurs in the above tree serves as a reference point for the theropod dinosaurs…

Q: In what ways do the genera Australopithecus and Homo differ?

A: Genetic evidence showed that about 7-10 million years ago, humans were evolved from chimpanzees. The…

Q: What adaptive benefit do the three middle ear bones afford mammals?

A: The three ear ossicles of mammals consists of malleus,incus and stapes which helps in transmission…

Q: Segmentation has evolved several times and occurs in most animal supergroups. What advantages do…

A: Segmentation can be described as a division of organism's body part into a series of repetitive…

Q: On the back of the human skull, there is a small bump, below which is an opening where the spinal…

A: Homo, a genus of the family Hominidae characterized by a relatively large cranial capacity, limb…

Q: Dogfish sharks (Squalus acanthias) represented  “primitive” gnathostomes and cats (Felis catus)…

A: Anatomy is a branch of biology concerned with identifying and describing living organisms' bodily…

Q: The evolution / development of the skeletal system of the vertebrate is an example of the process of…

A: Osteoblasts create both endochondral and intramembranous bones, whereas osteoclasts destroy the…

Q: The following image is from a scientific publication by paleontologist Niel Shubin, who was part of…

A: Homologous structures such as organs or bones are the structures which posses similar anatomical…

Q: Which of the following are NOT trends that have occurred during the evolution of the central nervous…

A: The objective of the question is to identify which of the given options is not a trend that has…

Q: Mammals have a particularly good sense of earing thanks to their inner ear which includes three tiny…

A: Comparative anatomy is the study of the "similarities and dissimilarities" between various objects.…

Q: What role do you think phylogenetic ancestors play in the evolutionary development of certain marine…

A: Phylogeny is the branch of systematics which helps in the study of evolutionary relationships…

Q: According to the picture blow, how many times did branched filaments evolve in dinosaurs?

A: Phylogeny is a branch of biology that studies the evolution of all living things on the earth. The…

Evolutionary lineages

An evolutionary lineage is a series of populations of organisms that descend from a common ancestor. Each species in the lineage is the direct consequence of evolutionary change from a common ancestor. A phylogenetic tree is generally used to display lineages visually. Lineages are components of the phylogenetic tree of life. Molecular systematics procedures are widely used to predict lineages.