which statement about macroevolution is true? a. The history of life on Earth follows a general trend toward increasing diversity marked by rare mass extinction events. b. The theory of punctuated equilibrium proposes that most evolutionary changes occur over long periods of time. c. The theory of gradualism proposes that major evolutionary changes happen relatively rapidly and are then followed by long periods of little change. d. All scientific understandings are complete, as scientific investigations have now filled in all remaining gaps.

Q: Explain about fossil record

A: A group of fossils that have been analyzed, after which they have been sorted into chronological and…

Q: Scientists find an artifact next to an index fossil. What can they conclude about the unknown age of…

A: Fossils are any preserved remains, impression or trace of any once-living thing from a past…

Q: Which assumption of cladistics is stated incorrectly?a. Living things are related by descent from a…

A: Cladistics-Cladistics are created for those organisms that shares a common ancestor formation of new…

Q: The bones of a bird’s wing are similar to the bones in a bat’s wing. This observation is an example…

A: Evolution can be defined as the unrolling of nature that brings about an orderly change from one…

Q: Explain the significance of the geologic timescale in the context of evolution

A: Geological time scale is composed of periods, Eras , and epochs. It is studied under the domain of…

Q: Given the sources of evidence, explain precisely how it supports evolution.

A: Evolution is a continuous transition of living forms, beginning with the basic forms of the past and…

Q: outline major stages in life evolution, and describe how the landsurface changed as life evolved.

A: The period from 4600 mya to 2500 mya is called Archean eon.

Q: Which branchpoint represents the most recent common ancestor of A and C? C 2 4 -A -B 3

A: The phylogenetic tree is a diagram and represents the evolutionary relationship between organisms.…

Q: Which idea stems from the theory of evolution? - a. The earth is relatively young. b. Each…

A: Evolution is change in the heritable credits of normal peoples over reformist ages. These ascribes…

Q: Which of these steps probably occurred first in the chemical andbiological evolution of life?a. The…

A: All living organisms are made up of organic components like carbohydrates, proteins, lipids, etc.

Q: The map below shows how the continents once were connected together (link to bigger map if you need…

A: Evolution is a step by step and gradual process that took millions of years to attain stability. It…

Q: Match the terms with the most suitable description. ____ lineage                         a. measured…

A: Evolution is the accumulation of genetic variations.

Q: The video game “Spore” invites players to design creatures and guidethem through “five stages of…

A: Evolution is the process of gradual accumulation of variations in organisms.

Q: Through which of the following sequences did chemical evolution MOST likely take place? Protobionts,…

A: According to Oparin, coacervate serves as a bridge between loose complex organic molecules and…

Q: Which of the following is true about the genetic differences between modem humans? O a. There are…

A: Question 1-c.These differences mean only that we look different to one another and are otherwise…

Q: Compare and contrast the difference between a prehistoric organism and modern-day organisms. What…

A: Answer

Q: Which evidence best supports the theory that organisms, such as whales, have common ancestry and…

A: The correct answers are: Options - 1, 3, 5

Q: Which is true concerning how fossils are used as evidence? O A. Fossils cannot be compared to one…

A: Fossil can be used as evidence to study ancient life and organism.

Q: What is the difference between micro- and macroevolution? a. Microevolution describes the evolution…

A: MICRO EVLOUTION The change in allele frequency within the population. The mechanism involved in…

Q: Describe an example from the fossil record that showshow life has changed over time.

A: Evolution is the process of heritable change in the characteristics of an organism. Such changes…

Q: Which factor most likely caused animals and plants in India todiffer greatly from species in nearby…

A: Among the given options, option (d) is the most appropriate.Upon the analysis of the rock…

Q: Rock strata with fossils Which organism is most recent? a b d a

A: Fossils These are defined as the remains of organisms such as plants, animals, single-celled living…

Q: Using the phylogeny, which statement best explains the evolutionary relationship of birds and bats?…

A: Interestingly though bird and bat wings are analogous as wings as forelimb they are homologous. The…

Q: The Hawaiian silverswords are an excellent example of which evolutionary process? (a) allometry (b)…

A: Hawaiian silverswords are a type of plant that can only be found in Hawaii. Because the ancestor…

Q: Cite and explain the factors that led to an enormous bloom of animal diversity in the Paleozoic era.

A: Paleozoic era began somewhere around 541 million years ago and ended around 252 million years. The…

Q: Organism A lived from 410 to 60 million years ago. Organism B lived from 200 to 100 million years…

A: In case of human or animal remains from the past 50,000 years, researchers focus at levels of carbon…

Q: Which is true concerning how fossils are used as evidence?     A. Fossils cannot be compared to one…

A: Answer: Introduction: Fossils are produced in many diverse ways, but that are widely produced at the…

Q: The fossil record provides evidence for:    A.When organisms lived on earth   B. How some species…

A: The fossil record is the story of life's development as preserved in sedimentary rock by fossils,…

Q: In a cladogram, each node represents a(n)______ . a. single lineage c. common ancestor b. extinction…

A: Cladograms are diagrams which relate the relationships between different groups of taxa called…

Q: Equater Permian - 225 million years ago Triassic - 200 million years ago Jurassic - 135 million…

A: Introduction Twenty million years ago the Indian and Asian continental plates clashed and pushed up…

Q: what key trait of life developed with the emergence of multicellular organism, the third threshold…

A: Multicellular organisms are those where there is specialization of different cells for various…

Q: Which is true concerning how fossils are used as evidence? O A. Fossils cannot be compared to one…

A: Evolution is a  process of gradual changes in the genetic composition of an organism based on the…

Q: What is an Analogy? A) When an anatomic feature is shared among organisms and their descendants B)…

A: Analogy example: Wings of birds, insects and bats.

Q: Given the sources of evidence, explain precisely how it supports evolution. C. Homologous Structure

A: Homologous structures are structures that have the same evolutionary origin. They may or may not…

Q: Describe the time line of appearances of different types of organisms on earth.

A: Evolution can be defined as the unrolling of nature that brings about an orderly change from one…

Q: describe the evolution that occurred in current time

A: The change in the heritable characteristics in a given population over a period of time is termed as…

Q: How do we know how old a fossil is? A) We compare it to current species and see how much has…

A: There are two ways of determining the age of a fossil - Relative dating and absolute dating.

Q: Discuss any three pre-Darwian views on evolution. Give examples of each.

A: Pre-Darwinian thoughts refer to the theories of evolution before the Darwinian theory of evolution.…

Q: Which of the following shows the correct sequence of periods in the Mesozoic era: a) Triassic,…

A: Evolution is a change in species and organisms that are inheritable and can be transferred from…

Q: Approximately when did life first appear on land A. 500 million years ago B. 2 billion years ago…

A: Question - Approximately when did life first appear on land A. 500 million years ago B. 2 billion…

Q: Both raccoons and monkeys have front feet/hands with long fingers that enable them to grasp and…

A: According to the scientific theory of evolution, the many species of plants, animals, and other…

Q: One type of fish fossil is found only in a rock layer near the bottom of a canyon, while a different…

A: Stratigraphy is the study of the rock layering and reveals a wealth of information about what Earth…

Q: ontogeny in phylogenetics? option a.) scientist gathers physiological traits and genetic data about…

A: Phylogenetics is the study of relationship between biological entities Phylo means a tribe, it could…

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.