All living things are divided into three domains: bacteria, archaea, and eukarya. They have several traits that are specific to each domain or shared across the domains.   Based on this information, what traits would the last universal common ancestor (LUCA) be expected to have? A. Nuclear envelope, introns in genes, and peptidoglycan in cell walls.   B. Histones associated with DNA, circular chromosome, and peptidoglycan in cell walls.   C. Unbranched hydrocarbons in membrane lipids, histones associated with DNA, and introns in genes.   D. Circular chromosome, unbranched hydrocarbons in membrane lipids, and one kind of RNA polymerase.

Q: Evolution, which involves genetic changes in a population of organisms over time, is often described…

A: Evolution is considered as a key unifying principle in biology. There is a popular saying that…

Q: Horizontal gene transfer is a process in which genetic material from an organism is a. transferred…

A: Genes are the structural and functional units of heredity that carry coded genetic information in…

Q: ecall the E. coli long-term evolution experiment.  What is the evidence that supports the notion of…

A: For this experiment, 12 populations of the bacteria Escherichia coli were taken. The glucose-limited…

Q: Which of the following conclusions about this form of life would be most justified?

A: Any life form that exists must have some form of central dogma for functioning and survivability,…

Q: Contrast neutral molecular evolution withadaptive processes.

A: The neutral theory of molecular evolution holds that almost all evolutionary changes occur at the…

Q: The transfer of an antibiotic resistance gene from one bacterialspecies to a different species is an…

A: Resistant bacteria, through poor hygiene and close proximity, spread to other individuals. Resistant…

Q: List the 6 kingdoms in the order in which they came to be. What two domains include a single…

A: The whole Earth is inhabited by a large number of organisms. These organisms are both unicellular…

Q: Plant seeds contain storage proteins that are encoded by the plant’s genes. When a seed germinates,…

A: Structurally related small hydrophilic proteins are known as plant seed protein. These proteins…

Q: Nucleic acids are isolated and analyzed from different cells in a mammal. How would the DNA sequence…

A: The DNA sequence of a skin cell would be similar to that of a nerve cell. Since, both of them are…

Q: Explain how the origin of self-replicating molecules was critical tolife’s origin.

A: Life on the earth is supposed to have originated from the chemicals.

Q: The first genetic material on Earth was probably (a) DNA produced by reverse transcription. (b) DNA…

A: Genetic material contains genetic information and transmits it from generation to generation.…

Q: The table below shows short DNA sequences from a gene in a closely related group of dragons, as well…

A: We have a group of seven closely related dragon species with homologous gene sequences. These are…

Q: Which of the following pairs of taxa are most closely related?   A. Eubacteria and Archaea   B.…

A: Taxa are defined as the group or set of one or more population of a specific organism to form or…

Q: An analysis of the human genome revealed that some regions of DNA that are highly conserved across…

A: Evolution has made every species become fit and has provided the species with reproductive fitness ,…

Q: In bacteria, split genes are extremely rare. Have introns been inserted into genes in the evolution…

A: In eukaryotes the template strand of DNA gets transcribed into pre-mRNA by the process known as…

Q: State a claim on how eukaryotic cells evolved. Using evolutionary evidence justify your claim. The…

A: Around 3.5 billion years ago, the first cellular life originated in the form of primitive bacteria…

Q: Which of the following sequences represents the hierarchy of biological organization from the least…

A: Cells are the basic structural and functional unit of all known organisms. There two types of cells…

Q: 5. Make a molecular evidence cladogram. Cytochrome c is a protein located in the mitochondria of…

A: Answer :: Step :- 1   The given circular DNA data indicates that amoeba is closely related to…

Q: What is a genome?   Group answers: a. The complete collection of an organisms genetic…

A: Genome is the whole hereditary information of a species including genes and non-coding part of the…

Q: Compare and contrast chromosomes in prokaryotesand eukaryotes.

A: Answer- Chromosomes are made up of DNA and histone proteins.

Q: Recall from our classes on molecular evolution that some proteins evolve more rapidly than others.…

A: The option is shown below.

Q: Particles that transfer genetic material from one species to another, especially in marine…

A: Marine prokaryotes are the cellular organisms that include the species of marine bacteria and marine…

Q: (I) Ordinary fish (II) Icefish 3 2 a-Globin gene 3 a-Globin gene fragment (pseudogene) 1 2 3 4 5…

A: Sequence alignment refers to the joining of two sequences based on the similarity of some portions…

Q: Explain how genetic mutations can eventually lead to evolution of a species.

A: Evolution is the process by which an organism inherits or adapts favourable characteristics that…

Q: The TATA-binding protein (TBP) is thought to be necessary for transcription in all eukaryotic cell…

A: The TATA-binding protein is a generic transcription factor that binds specifically to the TATA box…

Q: Geneticists have determined the amount of DNA, the number of different genes, and the size of the…

A: A gene is the essential physical and useful unit of heredity. Genes are comprised of DNA. A few…

Q: 1) How have scientists created the "tree of life"? Do you think that variations exist between these…

A: As per the guidelines, first question is answered. In evolutionary exhibits the evolutionary trees…

Q: Describe an experiment you could perform or evidence you could observe that would prove that DNA is…

A: Introduction: Despite the fact that researchers found the mechanism causing trait inheritance to…

Q: Scientists wanted to determine what molecule held the 'gene'. If they did a study in which a cell…

A: The flow of genetic information in a biological system is explained by central dogma and it involves…

Q: Mitochondrial DNA (mtDNA) is genetically identical to Select one: a. DNA found in the nucleus of the…

A: Mitochondrial DNA are the small circular chromosomes that are present inside the mitochondria.

Q: You want to make a phylogenetic tree of a group of three related species of lizards that live on an…

A: Evolution is any alteration in the "heritable characteristics" of the population. These…

Q: Segmental duplications play an important role in evolution by a. giving rise to new genes and…

A: Evolution is a process of the change in the characteristics of a species over several generations…

Q: NA be found in Fungi?

A: Genetic material is the information that living organisms use to run their bodily system…

Q: The Miller experiment created   a. life.   b. artificial proteins.   c. DNA.   d. simple molds.…

A: The Miller and Urey experiment proved that the organic molecules needed to sustain life could be…

Q: According to the progressive, or escape, hypothesis, viruses (a) appeared before the three domains…

A: Virus is a relation between living and non living world and it is infectious. This is because ,…

Q: You are studying the evolution of species. After performing DNA analysis, he discovers a gene that…

A: DNA analysis It is also called DNA profiling. This is a process that is used to determine the…

Prokaryotic evolution

The term evolution means the gradual change or a transformation from a simple or primitive state to a complex or advanced state. Prokaryotic evolution is a concept that involves the evolution of the form and function of most primitive organisms (prokaryotes) through several stages and changes to form diverse life as a part of organic evolution.