What is the most probable primitive condition for eutherian (placental) mammals (node C)?

Q: Differntiate and classification of mammals like eutheria,metatheria,prototheria?

A: Mammals are characterized by the presence of mammary glands that function to feed the newborn. These…

Q: Explain the significance of the discovery of Archaeopteryx. Why did this fossil demonstrate beyond…

A: Evolution is a natural process that includes several changes over many generations in the…

Q: Which of these fundamental concepts is well illustrated by genetic exchange among, but distinct…

A: Evolution Is the change in the specific features of a species over several generations and depends…

Q: Can the anatomy of extinct ancestral species be inferred from the developmental genes shared by…

A: Evolution is the gradual accumulation of genetic variations to produce new features or the new…

Q: The evolution of which of the following features of mammals is hardest to trace through the fossil…

A: Fossil records are the remains of dead organisms that remained intact in various layers of soil in…

Q: Why would you expect a hybrid of Neanderthals and modern humans to have intermediate features?

A: Neanderthal is a group of archaic humans that went extinct around 40,000 years ago. While modern…

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 most probable primitive condition for the whole group (node A)? O a. Claws O b. Nails O…

A: A cladogram is a cladistics diagram that depicts relationships between species. A cladogram, on the…

Q: Which arthropod class is the most diversified animal group of the planet? How can this evolutionary…

A: Arthropods have jointed appendages. They are characterized by wings and  3 pairs of legs.

Q: How does the hypothesized origin of modern humans (Homo sapiens) differ from the hypothesized origin…

A: Evolutionary history reveals that certain races of humans start evolving at different places. It is…

Q: What era did Australopithecus afarensis evolve?

A: It is required to identify the era in which Australopithecus afarensis evolve.

Q: Urochordates, instead of amphioxus, are now considered the sister group of vertebrates. Why is…

A: Urochordates are monophyletic and belong to Vertebrata. The tadpole larva shows the morphology of…

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: Why did ancestral mammals survive the asteroid impact while the dinosaurs did not?

A: If an asteroid coming on earth and breaks into fragments, any fragment larger than 35 meters across…

Q: What does hindlimb shape say about the ancestry of dolphins and other cetaceans?

A: One of the orders of Mammals is Cetaceans that had originated about 50 mya in Eocene epoch. This…

Q: You decide that it is a eutherian rather than a marsupial. How do you know based on its…

A: A marsupial is a mammal that raises its newborn offspring inside an external pouch at the front or…

Q: According to the current hypothesis, when did most major groups of animals evolve?

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

Q: What does the nostril position say about the ancestry of dolphins and other cetaceans.

A: Cetaceans are aquatic marine mammals.  In this group it contains dolphins and whales. they are…

Q: If the genus Australopithecus is considered an outgroup, what are THREE shared derived characters of…

A: Cladograms(phylogenetic trees) are graphical charts that depict the hypothetical correlations…

Q: Which of the following is true as the presence of bones is similarly found both in the baleen whale…

A: Baleen whales (systematic name Mysticeti), also known as whalebone whales, form a parvorder of the…

Q: Distinguish among the following members of genus Homo: H. habilis, H. ergaster, H. erectus, H.…

A: In evolution the Human evolution is one of the major evolutionary process in the history of primates…

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: 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: what were the earliest members of the genus Homo?

A: Human evolution is the evolutionary path that led to the development of anatomically modern humans,…

Q: Transitional Fossils: Which of the following is the corre sequence in the evolution of structures…

A: Vertebrate incursion from aquatic to terrestrial environments required a significant change in their…

Q: are the four categories of lifestyle adaptations used to define the genus Homo?

A: early humans lived in caves or simple huts or tepees and were hunters and gatherers. They used basic…

Q: In which ways does the limb orientation of "advanced" tetrapods differ from that of "primitive"…

A: Manus is a term used for hands or and forelimbs.

Q: Ray-finned fish Sharks Roderts & ratbts Crocodles Amphibiens Primates Birds Hair Eggs wth shel…

A: An outgroup in a phylogeny is the most distantly related organism.Here in this phylogeny the…

Q: Why are all of the fossil taxa from the Pliocene in this module called hominins?

A: Fossils are the preserved remains of plants and animals that were buried beneath ancient oceans,…

Q: Why is it likely that Hox genes have played a major rolein the evolution of novel morphological…

A: The Hox proteins are involved in the transcription factor discovered from Drosophila which govern…

Q: Transitional Fossils: Which of the following is the correct sequence in the evolution of structures…

A: The invasion of vertebrates from the water(aquatic) to the land(terrestrial) needed a huge…

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: Transitional Fossils: Which of the following statements is/are false regarding the limbs of…

A: As per our policy, we are answering the first question only. Kindly repost for other questions.…

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: 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: Dinosauria is divided into these two major clades O theropods & ornithopods crurotarsans &…

A: Discovery of many new species since 1840. Dinosaur is divided into major classes.

Q: If you were to build a phylogenetic tree of living animals, which of the following derived…

A: Introduction :- Deuterostomes are an animal clade that undergoes deuterostomy during embryonic…

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: What are the key evelutionary trends and other developments in early Homo?

A: Homo erectus  is the extinct species of humans from the Pleistocene period which was about 2…

Q: Which statement best explains why Lystrosaurus fossils are found on these two continents?

A: A fossil is any preserved traces, impression, or residue of a once-living thing from a previous…

Q: Do you think Paranthropus and Homo interacted? What is your evidence?

A: Question - Do you think Paranthropus and Homo interacted? What is your evidence?

Q: Based on anatomy, fossil, embryos, and DNA what are the closest living relatives of cetaceans, fish…

A: Cetacean, any member of a completely aquatic cluster of mammals usually referred to as whales,…

Q: Was the ancestor of all dinosaurs feathered or scaly?  What character condition did you get

A: It is clear from the genetic tree that ancestral dinosaurs were mostly scaly.

Q: what are the browsing-horse and the paleotheres parallel evolution?

A: Evolution is a gradual process of change in characteristics as per surrounding environment and needs…

Q: Hypothetically, if large/medium sized whales had not evolved, how may this have impacted the…

A: * Megalodon is an extinct species of mackerel shark . *It was thought to be member of family…

Q: Describe a reason for the hypothesis that the ancestor of eleuthero-zoan groups was a radial,…

A: Eleutherozoans are a subgroup of echinoderms. Most modern day echinoderms have upward facing mouths…

Human Evolution

Human evolution is the process of evolution of humans from early man to anatomically modern humans. The process of evolution in humans leads to the gradual development of traits like bipedalism. Humans are the highly social animals that make them the most advanced animal on Earth.  Human evolution is an outcome of interaction among the following processes: