From this lab, one might conclude that certain trends can be detected, trends from ancestral features (those that arose early in the evolution of animals) to more derived traits (those that arose later). However, animals with ancestral characteristics still successfully exist on Earth today. Why is this so? Why have the animals with derived traits not completely replaced the ones with ancestral traits? Use examples from the lab to illustrate your answer. examples cephalochordata jawless fishes jawed fishes tetrapods rat

Q: Construct a dichotomous key to the classes of vertebrates using the table of characteristics below.

A: Given: Need to find in which class the vertebrates belong by checking the characteristics and…

Q: Elaine Morgan makes the case that humans may have an aquatic ancestor in recent evolutionary past.…

A: Elaine Morgan theory suggests that early apes have lived  in aquatic environment a significant part…

Q: Tiktaalik is a fish that lived 375 million years ago that grew to three metres long and had aquatic…

A: The study of evolutionary processes and speciation provides valuable insights into the mechanisms…

Q: n point on ancestor) Lungfishes -Amphibians Mammals a limbs Amnion Lizards and snakes Tetrapods…

A: A phylogenetic tree is a diagram that represent the lines of evolutionary descent of different…

Q: What is the select advantage of the evolution of the jaw in dogfish shark?

A: The dogfish shark or spiny dogfish is the species of the Squalidae family of sharks, which is a part…

Q: (6a) Please draw a phylogeny that shows relationships between the following groups: Haikouicthys…

A: Phylogeny is a mechanism to identify the relationship or arrangement of organisms according to their…

Q: rovide two examples from invertebrates of such ‘reverse evolution’ from a derived state (specialized…

A: We often think about evolution in terms of a progressive change but it is not completely true. There…

Q: Choose 5 filter feeders including sponges and whale sharks, each from a distinct animal phyla or…

A: A filter feeder is an animal that obtains its food by filtering particles from water or air. This…

Q: What is some evidence from phylogenetictree of hollowed bones and tufted feathers

A: The objective of the question is to understand the evidence from the phylogenetic tree of hollowed…

Q: Which of the following statements is BEST supported by the phylogenetic tree? A The development of a…

A: Phylogenetic tree is a diagrammatic  illustration which tells how species are closely related to…

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: Where on the tree did lungs (or lung derivatives) evolve? Group of answer choices D C A E B

A: Phylogenetic tree of chordates is given in the question. Phylogeny depicts the evolutionary…

Q: Scientists have found one new fossil that is similar to Archaeopteryx. It is only the second fossil…

A: Archaeopteryx was discovered in southern Germany in 1861 and it is characterized by unusual but…

Q: Snapping shrimp have evolved very rapid movements in the structures they use to capture prey. These…

A:

Q: previously undiscovered sea creature that appears to represent a new phyla. It happens to have…

A: The mouth develops first, and it goes through several larval stages in which it molts and regrows…

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: a-Tiktaalik is a fish that lived 375 million years ago that grew to three metres long and had…

A: The study of evolutionary processes and speciation provides valuable insights into the mechanisms…

Q: Find the hash mark indicating the origin of jaws. Which group or groups of vertebrates possess jaws?…

A: Vertebrates are the chordates that have a vertebral column.

Q: Please place the following Chordate adaptations in order of most ancient (1) to most recent (4). 1…

A: Evolutionary developmental biology, is considered a new norm in evolutionary biology. It arose from…

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

A: Introduction Evolution is the process of a species' features changing over numerous generations…

Q: Consider the following statement. Is it true or false? Why? Please justify your answer explaining…

A: In the context of genomics, evolution is the process by which living things undergo alterations in…

Q: In 1928 Walter Garstang hypothesized that tunicates resemble the ancestral stock of the vertebrates.…

A: Introduction: Tunicate dwells in marine environment and is an invertebrate belonging to subphylum…

Q: Which of the following statements regarding the diversification of animals is supported by the…

A: Biodiversity improves ecosystem productivity by allowing each species, no matter how little, to play…

Q: Are humans classified into this group, too? ______

A: ANSWER) Perch is an example of a vertebrates that has the character know as jaw and almost 99% of…

Q: Observe the behavior of the live goldfish. Note the movement of the operculum. What is its function?…

A: Operculum is a characteristic of Bony fishes like Goldfish. It supports the facial features of the…

Q: Ornithopods and ceratopsians are characterized by numerous instances of convergence. Which of the…

A: Ornithopods are small, bipedal, running dinosaurs that are herbivorous animals. These dinosaurs have…

Q: Fishes and aquatic amphibians possess a lateral line system, while aquatic mammals and reptiles do…

A: All vertebrates that have limbs falls under the category of tetrapoda. It includes both the extinct…

Q: Find a representative fish from types A-C.  Give the species name of the fish, its family, and what…

A: The fishtail of ancient sharks has an upper part with a backbone that extends to the tip of the…

Q: Which of the following identifies and describes the student model that is most consistent with the…

A: A phylogenetic tree or evolutionary tree is a branching diagram or ‘tree’ showing the evolutionary…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.