Based on anatomy, fossil, embryos, and DNA what are the closest living relatives of cetaceans, fish or mammals?

Q: What are the hypotheses used to trace early evolution of animals?

A:

Q: Primate taxa having Y-5 molars AND ischial callosities include: Group of answer choices: ceboidea…

A: Y 5 molar  These molars have five cusps with grooves in between them and form a Y shape.  ischial…

Q: . When during the history of life did vertebrates evolve?

A: Earliest Vertebrates evolved 550 million years ago.

Q: What are the general characteristics of animals in each era: Cenozoic, Mesozoic, and Paleozoic?

A: Definition with example of blood groups Parents pass on traits or characteristics, such as eye…

Q: How did the origin of jaws, lungs, limbs, and the amnion affect thecourse of vertebrate evolution?

A: A vertebrate is an animal that has a backbone and a skeleton. Human beings are part of this…

Q: Approx how many mass extinction events occurred throughout the evolutionary history of animals

A: Biodiversity is the diversity of biological life forms present in three forms of genetic,…

Q: What can skeletal anatomy and DNA sequences in existing primates tell us about the study of human…

A: Comparing the skeletal anatomy of human fossils with existing primates provides info concerning diet…

Q: What is the correct order of appearance in the fossil record, starting with the earliest: reptiles,…

A: Vertebrates comprise mammals, birds, reptiles, amphibians, and fish, a widely recognized category of…

Q: From the shared traits of present-day snails,squids, and clams, what features do you think the…

A: Mollusks are the members of the phylum Mollusca which is one of the diversified and largest animal…

Q: What type of data is primarily used to determine the existence and appearance of early animal…

A: Animals are multicellular eukaryotic organisms. They possess a well-defined growth pattern that…

Q: Draw a simple cladogram illustrating the evolutionary relationships among extant mammals…

A: The living organisms are interrelated with one another. The study of the interrelationship among…

Q: The Cambrian explosion is a conundrum: how can the long prior history of the phyla, revealed by…

A: Evolution is change in the heritable qualities of natural populaces over progressive ages. These…

Q: What are the general reasons of animals' existence in each era: Cenozoic, Mesozoic, and Paleozoic?

A: Geological time scale: It is a time period used to measure the time or age of the earth by seeing…

Q: What kind of fossils were formed out of dinosaur remains and activities? Why do you say so? (Give…

A: Dinosaurs lived many million years ago and they turned into fossils when they are dead. Almost 99%…

Q: Visual Skills Use the diagram to determine which happened first during the evolutionof cetaceans:…

A: Cetaceans (whales, dolphins, and porpoises) are a request for warm blooded animals that began around…

Q: Which trait shown is shared by all of the organisms in the phylogenetic tree? Ray-finned fish…

A: The phylogenetic trees were developed to identify evolutionary relationships among organisms that…

Q: Your age-dating put the age of the rocks you are examining in the early Devonian period. Because of…

A: A phylogeny is a hypothetical relationship between groups of animals that are represented by a…

Q: Which of the following correctly describes the cleavage pattern in reptiles, birds, and fish?…

A: Cleavage is the process of cell division in the developing embryo following fertilisation in…

Q: Does vertebrates evolved from a common ancestor? Exlain your answer.

A: The vertebrates include humans and all other backboned species, as well as a handful that has no…

Q: How many anatomical characteristics do cetaceans share with mammals and fish?

A: Introduction: Those vertebrates that have a memory gland and give birth to the young ones instead of…

Q: How can we understand the evolutionary relationships among animals, and how, in turn,can we…

A: Answer: Introduction: A phylogenetic tree, also called as a phylogeny, is a diagram which shows the…

Q: Draw a phylogenetic tree depicting our current understanding of the animal phylogeny. Include the…

A: Phylogenetic tree of animal is based on morphological, genetic and fossil evidence that helps us to…

Q: How many common characteristics do cetaceans share with mammals and fish?

A: According to the question, we have to explain how many common characteristics cetaceans share with…

Q: In what important ways did invertebrate life change between Ordovician time and Devonian time?

A: Evolution is a process of slow and gradual change over a period of time. There are many different…

Q: the common ancestor of Cnidarians were an open-ocean jelly fish, what would you infer regarding the…

A: Cnidarians is a phylum which comes under the main classification animilia  They are aquatic animals…

Q: Which living animal fish ir mammals are most closely related to cetaceans? Why

A: Mammals are a gathering of vertebrate creatures comprising the class Mammalia, and described by the…

Q: List the modifications that are thought to give some cetaceans the ability to (a) increase their…

A: Cetaceans are aquatic mammals and this order includes some of the largest mammals that have ever…

Q: Which well-known group is ancestral to all living birds? What evidence in the fossil record supports…

A: Fossils are the prime pieces of evidence of evolution. It includes the remnants or impressions of…

Q: are birds such as cassowaries and ostriches the closest links we have to velociraptor dinosaurs or…

A: Aves is the name of other class which birds belong and its its forelimbs are modified into wings .…

Q: What is the phylogenetic relationship between Homo heidelbergensis, H. sapiens, and  H.…

A: Homo heidelbergensis began to develop regional differences that eventually gave rise to two species…

Q: How do Primates fit into the larger phylogenetic tree for all living things?

A: It has been very difficult to resolve the divergence time and the origins of the basal lineage due…

Q: Arrange the groups in order in which they evolved. ___ 1 (earliest)           a. Jawless fishes ___…

A: The marine ecosystem is defined as the largest aquatic environment with high levels of salt in the…

Q: What do Homo Sapiens fossils reveal abou modern hummans' origins?

A: The first fossils of early modern humans were identified in 1868 at the 27,000-23,000-year-old…

Q: Compare and contrast the characteristics of amniotes, mammals, primates, early human ancestors and…

A: Introduction Taxonomy is the branch of science which deals with the classification of organisms in…

Q: Amphioxus long has been of interest to zoologists searching for a vertebrate ancestor. Explain why…

A: Amphioxus, also called lancelets, are the marine invertebrate chordates.

Q: How is it that most, if not all, of the extant animal phyla today evolved during the Cambrian period…

A: To date, there has been no other evolutionary explosion as strong as the Cambrian period in the…

Q: Fossil records had given scientists a glimpse of the past, to what extent these fossil records…

A: Fossils are the preserved remains or traces of animals, plants, and other organisms from the past.…

Q: How is the traditional animal family tree similar or different from the  phylogeny reflecting…

A: Phylogenetic trees represent evolutionary relatedness between living organisms. These relatednesses…

Q: Answer the following questions about this phylogenetic tree. What animal represents the out group in…

A: According to bartleby guidelines, only the first three subparts have been answered. Kindly post the…

Q: Describe the evolution of mammals, tracing their synapsid lineage from early amniote ancestors to…

A: An animal that is characterized by the presence of mammary glands (mostly in females and sometimes…

Q: What types of molecular and morphological changes occurred along the different branches that led to…

A: Answer: Introduction: Tetrapods (means four limbs) evolved from a group of animals called as the…

Q: What is /are the most recent ancestor/s of the following: Modern Fishes Earliest amphibian (What…

A: Vertebrates (also called Craniata) are all creatures that belong to the Vertebrata subphylum…

Q: Are bird wings and the wings of bats (evolved from limbs) an example of an evolutionary homology or…

A: Homology means the organs that are evolved from the same point of origin but have evolved different…

Q: What is the subphylum and subclass of humans?

A: Introduction  All plants, animals, and microbes in the world are included in taxonomy, which is the…

Animal Diversity

Nematodes are commonly known as roundworms. They are free-living, very tiny organisms. They have an elongated and tubular body. These organisms have a nervous system and are mostly act as parasites to both animals and plants.

Platyhelminthes

Platyhelminthes are also known as "flatworms" because as they are dorsoventrally flattened from head to tail. They are invertebrate, soft-bodied, acoelomate, unsegmented and have bilateral symmetry.