WHAT IF? In several different animal lineages, organisms with a head first appeared around 530 million yearsago. Does this finding constitute proof that having ahead is favored by natural selection? Explain

Q: Macmillan Learning There are many examples of species that were ancestral to or closely related to…

A: Evolution is the change in heritable characters in a population of organisms from one generation to…

Q: You have found fossils of a new species of ape that walks upright. After 11 additional years in the…

A: The whole branch of biology which deals with  establishing the relationship between two species is…

Q: 5. From about 23 million to 17 million years ago, as grasslands replaced forests throughout most of…

A: The change in trait in organisms over a period of time is known as evolution.

Q: Prompt Human babies of low weight lose body heat quickly, and are more likely than other babies to…

A: Answer- Micro-evolutionary mechanism involves genetic drift, mutation, natural selection which…

Q: e seven primary Linnaean categories are: O Genus, Species, Group, Kingdom, Animal, Tribe, and Fam O…

A: 6. Linnaeus’ hierarchical systems are categorized into seven groups: These are Kingdom, Phylum,…

Q: The HOX Genes in the acoelomorph Includes only one family of HOX genes are not present because they…

A: Hi. Since you posted more than one question, we will be answering the first one for you. If you want…

Q: A 3 7 F + H. 4 3 1 = red feet %3D J 2 = spots 3 = blue tongue 4 = scales 5 = tail M 6 = yellow skin…

A: Introduction :- A phylogenetic tree is a diagrammatic representation which represents the…

Q: When you examine the phenotype of wings - why can you conclude that wings & flight are analogous…

A: Change in visible characteristics of an organism which takes place from many generations is called…

Q: WHAT IF? Suppose a molecular clock dates the divergence of two taxa at 80 million years ago, but new…

A: Molecular clock is also known as evolutionary dock or gene clock. It is based on observation of…

Q: How do you think the evolution of mammals (including the emergence of humans) might have been…

A: Mammals evolved from members of the reptile order Therapsida during the Triassic Period…

Q: 1. How do fossil finds support theory of evolution?2. What are some limitations to fossil records as…

A: Fossils are the remains residue or impressions of an organism that have lived in the past. Fossils…

Q: Which observation is NOT an evidence for Darwin's theory of common descent? O There are…

A: Darwin's theory of evolution states that individuals of species are not identical. It also states…

Q: \. Read some papers (find them using any of several literature-search engines that your instructor…

A: BASIC INFORMATION EVOLUTION The theory of evolution was first given by the Jean Baptist de Lamark.…

Q: Traits that are specialized to a particular lineage, and not widely shared among remotely related…

A: A phylogenetic tree is a diagrammatic representation which explains the concept of evolutionary…

Q: WHAT IF? Suppose gene A is orthologous in species 1and species 2, and gene B is paralogous to gene A…

A: Orthologous and paralogous genes are two types of homologous genes, that is, genes that arise from a…

Q: What is this called, when two species look alike but are not related via evolutionary history?

A: Evolution is orderly change from one form to another. Evolution is explained by Charles Darwin.

Q: 13. Which of the following is NOT a general finding from the fossil record that confirms evolution?…

A: In evolution fossils serve as a direct evidence for providing the direction of evolution.  These are…

Q: how the predictability of cues affects the evolution of learning, and, justify why they have the…

A: The prospective memory defines the ability to identify the intentions when a cue occurs. The…

Q: Which is a question Lamarck MOST LIKELY would have asked when developing his evolutionary…

A: Lamarck proposed theories like the inheritance of acquired characters, use and disuse of organs, and…

Q: Does this lab demonstrate natural selection? Use evidence from the lab and explain how the evidence…

A: Natural selection: it is a process in which organisms better adapted to the environment, survive and…

Q: MAKE CONNECTIONS Hawaiian silverswords underwent a remarkable adaptive radiation after their…

A: Adaptation is the evolutionary process whereby an organism becomes better able to live in its…

Q: What hypothesis did Alfred Russel Wallace make about the uniquebirds and mammals on either side of…

A: Alfred Russel Wallace proposed the idea of the Wallace line in the Malay archipelago. The Wallace…

Q: Which of the following recent fossil discoveries dating between 4.4 – 5.8 mya was clearly bipedal as…

A: Fossils are the remains or traces of ancient life that are buried under rocks after organisms die.…

Q: Which micro-evolutionary mechanism occurred? Why?

A: The process of microevolution can take place by various ways such as; migration of species from one…

Q: What makes Australopithecus sediba particularly interesting? It evolved a very large brain. It shows…

A: Australopithecus sediba is an old species of australopithecine found at Malapa Cave, Support for…

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A: Most fundamental characteristics in evoultion of these animals are as follows_ EMU_ They are…

Q: Explain well and give examples.

A: Species is a gathering of living beings that can recreate with each other in nature and produce…

Q: new population. Questions Which micro-evolutionary mechanism best describes this event?

A: There are a few basic ways in which microevolutionary change happens. Mutation, migration, genetic…

Q: Full or partial limblessness has evolved many times invertebrates (snakes, lizards, manatees,…

A: Evolution is the process of change over time, typically involving gradual changes that lead to new…

Q: Ducks are aquatic birds. Their feet are webbed and this trait makes them fast swimmers. Biologists…

A: Introduction : The water is necessary for the aquatic birds to swim. As compared to fish, they don't…

Q: Look at the Animal Tree. The green outlined rectangular area shows a lumping of extant species that…

A: Humans are different from other animals in phylogeny in many characteristics such as bipedalism, the…

Q: MAKE CONNECTIONS Explain how natural selection could increase the resemblance of a harmlessspecies…

A: Natural selection is one of the factors of evolution. Evolution is the process of heritable change…

Q: Why are we unlikely to observe elephants evolving within our lifetime? * Elephants don't evolve O…

A: Evolution can be defined as the process by which an organism over the course of time and multiple…

Q: ulation are an example of evolution?    Simulation:  For this lab, the dominant allele for normal…

A: Evolution is a phenomena in which the changes that accumulated in the past are reflected in the…

Q: 1 - Consider natural selection and biocultural evolution.  Why do you think anatomically modern…

A: Natural selection: It is a non-random process by which the biological traits become more or less…

Q: 2. Primates have evolved across the continents over the last 70-80 MY. Let's consider the species…

A: DNA sequences may provide information to the researchers if they have uncovered a new species.…

Q: moryos stage, Fish Salamander Tortoise Chick Rabbit Human Describe how the embryos changed for each…

A: Human Developed limbs, defined features in face, neck, ears, loss of tail, tiny fingers present…

Q: 7 What are the four structures found in all chordates? 8 Sharks are in what group within the phylum…

A: 7 ) The four structure found in all chordates are - a notochord , pharyngeal slits , dorsal hollow…

Q: Sexual selection leads to brighter male plumage in a species of duck. Choose. The evolution of the…

A: Evolution can occur at the micro and macro level, driven by various interactive forces in the…

Q: 3. 2. Application Sapiens existed on Earth for a relatively long time? Explain. Yes, 300,000 Years…

A: Homo is the Latin word for 'human' or 'man' and sapiens is derived from a Latin word that means…

Q: Examine the figure attached. Provide one idea of how gene evolution of major body patterning genes…

A: "Genes" are the fundamental unit of heredity. They store genetic information in the form of DNA,…

Q: The name for the monophyletic group of animals that includes all reptiles, mammals, birds, and…

A: Monophyletic group is a clade that includes an  ancestors and all of its descendants.

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.