According to the fossil record, what did the common ancestors of all tetrapods (four-limbed animals) look like? * O Fish Bacteria O Land Mammals O Reptiles

Q: Describe the evolutionary changes that had to occur to go from a Osteichthyes to a mammal. What were…

A: Evolution is a phenomenon that occurs in the environment as a result of hereditary changes and…

Q: If you discovered a fossil hominin that was adapted for both arboreal and bipedal locomotion, had an…

A: Introduction Bipedalism is a type of terrestrial locomotion in which an organism moves by using its…

Q: Which of the following characteristics evolved independently in mammals and birds? bone endothermy…

A: Mammals are a group of vertebrate animals constituting the class Mammalia and characterized by the…

Q: A major difference between birds and other reptiles is that birdsa. produce a shelled egg. d. care…

A: The group of heterotrophic, multicellular, and eukaryotic organisms that do not show the presence of…

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: Amphibians evolved from what type of ancestral fish?a. sea squirts and lancelets                  d.…

A: Amphibians can be defined as the ectothermic, tetrapod vertebrates belongs to the class Amphibia.…

Q: In the Paleozoic era, the first vertebrates to live on land were thea. amphibians.b. reptiles.c.…

A: The Paleozoic era is the earliest of three major geologic eras found in geologic periods which…

Q: According to the fossil record, what did the common ancestors of modern birds look like? Horses O…

A: Option D is correct. According to fossil record, the common ancestors looked like were dinosaurs.

Q: Australopiths are_______ . a. a type of monkey c. extinct hominins b. wet-nosed primates d.…

A: Australopiths belong from Australopithecus, which evolve from 4.18 to about 2 million years ago

Q: The fossil cephalopod has a calcareous shell and a squid-like body that would extend out of the…

A: Anatomy is the branch of biology that deals with the study of the structure of organisms and their…

Q: With what group do hominoids share the most recent common ancestor? (a) Old World monkeys (b) New…

A: Primates are placental mammals and they originated from arboreal, small tree-dwelling shrew-like…

Q: Professor Andrew, a paleontologist discovers a transitional fossil between a stem amniote and…

A: Fossils are the preserved remains or traces of organisms (plants, animals, etc.) from the past.…

Q: Amphibians evolved from which type of ancestral fish?a. sea squirts and lanceletsb. ray-finned…

A: Amphibians evolved from lobe finned fishes as ancestral fish.

Q: Which of the following is an example of evolution co-opting a ready-made structure for another use?…

A: Some scientists like Darwin believe that evolution is a occurred through a series of small, gradual…

Q: Discuss: How old are the oldest camel fossils shown? How has the skull changed over time? How have…

A: Evolution is the gradual change in forms of life throughout the world. Plants, animals, microbes all…

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: Which archaic Homo sapiens fossil has cut marks on its face, indicating a burial or ritual practice?…

A: Introduction The evolutionary process that resulted in the emergence of Homo sapiens as a distinct…

Q: Some large snakes, such as pythons, have small internal lég bones. These bones are examples of…

A: The largest living snakes in the world, measured either by length or by weight are various members…

Q: If Lamarck and Darwin had debated why giraffes have such long necks, how would their explanations…

A: Evolution is a steady ( gradual) phenomenon which cause transformation of life from simple to…

Q: Why do you think the ancestors of the extant amphibians became successful in adapting from the life…

A: Thank you for the question  Answer : Amphibians are a group of vertebrates that can live on land and…

Q: What best describes the hind leg bones seen in the whale? Leg bone O Vestigial structures that had a…

A: INTRODUCTION Vestigial structure This is anatomical structures which has no longer purpose in the…

Q: 30. Class Aves evolved from Jurassic dinosaurs belonging to which of the following chordate groups?…

A: The birds or the aves were cosidered to be evolved fromthe jurassic dinosaurs of clade Therapoda.…

Q: The earliest-diverging gnathostomes (jawed vertebrates) were fish. Which one of the following…

A: Jaws, in fishes, are developed from the pharyngeal arches, which play a major role in protection of…

Q: Scientists used to think that all dinosaurs were large and slow-moving. Which discovery overturned…

A: Fossils of pterosaurs confirmed that these reptiles had hollow bone and wings: One of the most…

Q: What does APODA mean? O A. Without true bone B. Without jaws C. Without teeth. O D. Without legs E.…

A: The term poda is used as a suffix in the name of the class of organisms that have limbs or legs.…

Q: Evidence indicating that Orrorin tugenensis (a pre-australopithecine) was bipedal comes mainly from…

A: Orrorin tugenensis is one of the oldest early humans in our family tree, having lived roughly 6…

Q: The Age of Reptiles corresponds to the (a) Paleozoic era (b) Mesozoic era (c) Cenozoic era (d)…

A: Molecular systematics assists biologists in interpreting fossil records to infer animal evolution.…

Q: Prehistoric remains of animals consist almost exclusively of bones and teeth. Why?

A: It is generally found that the prehistoric times mainly comprise of harder body parts like bones and…

Q: Based on phylogeny and history of evolution, do new anatomical features such as lungs (amphibians)…

A: The study of links between various groups of species and their evolutionary development is known as…

Q: What is a homologous structure? (Example: humerus of a human and whale) O Different structure, same…

A: Humerus of human is the long bone which is present in arms that runs along the shoulder to elbow.It…

Q: The oldest body fossils of a land animal are of_____ .a. insects c. cnidariansb. roundworms d.…

A:

Q: Lateral undulation is a type of locomotion used by many basal Chordates, but it is used by derived…

A: Option 1 is correct because all living crocodilians are aquatic and they swim with lateral…

Q: Which of the following is not a characteristic of Neanderthals? O A. A weak chin O B. Average brain…

A: Here we have to find out which one is not a characteristic of Neanderthal.

Q: pout evolutionary relationships. Ray-finned fish Rodents Amphibians Primates & rabbits Crocodiles…

A: crocodiles are reptiles and among amphibians are frog and Salamanders, both are distant groups yet…

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: The first primates evolved from (a) shrewlike monotremes (b) therapsids (c) shrewlike placental…

A: Humans are classified as part of the Tribe Hominini, which includes modern-day Homo sapiens as well…

Q: What are the largest animals ever to have lived on Earth? From what animals are they thought to have…

A: The branch of biology that deals with the structure, function and evolution is called zoology. It…

Q: This West Indian manatee (Trichechus manatus) is an aquaticmammal. Like amphibians and reptiles,…

A: Hi! As you have posted multiple questions, I will be answering the first question for you. If you…

Q: Which of the following is not an anthropoid? a. Lemurs b. Monkeys c. Apes d. Humans

A: Lemurs are not an anthropoid.   Anthropoids include monkeys, apes, and humans. The anthropoid means…

Q: Tool use is a synapomorphy of which clade? Homo O Australopithecus O Paranthropus O None tools were…

A: Q. Sympanomorphy:  Sympanomorphy is a character or characteristic that is shared by two or more…

Q: If members of a group, such as chordates , evolved from a common ancestor then they should show…

A: The oldest discovered fossil of chordate is Pikaia gracilens belonging to cephalochordate. It is…

Q: Do you think Woolly Mammoths should be brought back from extinction? How about Neanderthals? why, or…

A: Why Woolly Mammoths should be brought back from extinction? At the conclusion of the previous "ice…

Q: If you as a paleoanthropologist are plannin an excavation at a hominin site in East Africa which is…

A: Paleoanthropologists collect evidences from fossil records with a human focus. it deals with the…

Q: Which of the following is a characteristic of all chordates at some point during their life cycle? O…

A:

Q: Which statement is true of chordates? O members of chordata are all in the same genus O all…

A: Chordates are bilaterally symmetrical, coelomic, deuterostomic animals with a well-defined…

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: Evolution Thinket # I. Pterodactyl (reptile) 1 2. Bat (mammal) 3. Albatross (bird) Why are the wings…

A: Analogous structure: These are the structures that are similar in function but not in structure and…

Q: In the evolutionary tree of vertebrates, birds are most closely related to: a) Mammals b) Crocodiles…

A: A chordate is a phylum which contains vertebrates like mammals, birds and some fishes and also…

Q: Put the following milestones in animal evolution in orderfrom oldest to most recent: (a) origin of…

A: The origin of life or abiogenesis states about the simple life forms that are risen from the…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.