How does the structure of a DNA molecule help account for the great variety of life that exists on earth?

Q: What experimentation has been done on finding the source or raw material for the first life on…

A: Harold Urey and Stanley Miller are two American scientists who attempted to create similar…

Q: How did discoveries in the deep sea influence scientists' ideas about whether life could be found…

A: A discussion of life elsewhere therefore naturally begins with a review of some key aspects of the…

Q: Which molecule is believed to have preceded the other two during the evolution of life? RNA…

A: Introduction :- When an environmental shift makes new resources available or poses new environmental…

Q: What would happen if the DNA and RNA that are mixed together came from very different organisms, for…

A: Hybridization is a process that involves the formation of sequence-specific, non-covalent…

Q: Why was the discovery of the structure of DNA so important for understanding genetics?

A: Deoxyribonucleic acid (DNA) is the hereditary material in humans and almost all other organisms. It…

Q: What are the weaknesses of the origin of life theories?

A: At the turn of this century, spontaneous generation began to make a comeback as a scientific theory…

Q: How did life first begin on Earth?

A: The Earth was created about 4.5 billion years ago. Scientists and researchers believe that the…

Q: Why was the discovery of DNA structure so important?

A: Molecular Biology is the branch of Biological Science that deals with the composition, structure,…

Q: How does analysis of DNA and proteins support each other evidence for evolution?

A: Introduction :- The interpretation of genetic sequences is known as DNA analysis, and it can be…

Q: How does Biogenetic theory explain the origin of life?

A: The biogenetic theory is a scientific theory that seeks to explain the origin of life. According to…

Q: How is DNA synthesis similar in the two types of organisms?

A: There are a few unique definitions for synthesis of DNA: it can allude to DNA replication - DNA…

Q: During the course of evolution why DNA was choosen over RNA as genetic materials?

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: The more DNA and protein sequences two organisms share, the ________________ closely related they…

A: Evolution is a theory which represents the development of new organisms from pre-existing forms and…

Q: How does the fact that Earth is a sphere tilted on its axis influence thedistribution of life?

A: Earth is so far the only planet that has the capability to sustain life on it. There are many…

Q: What was Stanley Miller's experiment (1953) on the origin of life?

A: Introduction In this question we will about the Stanley Miller's experiment (1953) on the origin of…

Q: How is origin of life attributed to LIGHT and WATER? Give a detailed explanation.

A: The origin of life is still a mystery and not proved. There are many theories that are suggested by…

Q: Can you explain how the structural and developmental characteristics and relatedness of DNA…

A: Answer:              The sequence knowledge is used to decide which stretches of DNA contain genes…

Q: With regard to the origin of life, why are biologistsinterested in the prebiotic synthesis of…

A: Introduction The Oparin-Haldane model suggested that under the highly reducing atmosphere of…

Q: How do molecular biology explain the evolution of life?

A: Molecular biology It is the science that studies the molecular basis of biological activity in and…

Q: What was the first nucleic acid molecule, and how did it arise?

A: Nucleic acids are the fundamental data conveying particles of the cell, and, by coordinating the…

Q: How were biomolecules likely to have formed on the early Earth?

A: The fundamental biochemical similarities that were observed in living organisms have developed…

Q: What is the most accepted hypothesis on the origin of life on earth? How does it compare to the…

A: Introduction The heterotrophic hypothesis on the origin of life is the most compelling and widely…

Q: Why do scientists think that all forms of life on earthhave a common origin?

A: Primitive atmosphere was reducing rich in Hydrogen (H2) and free molecular oxygen (O2) was absent,…

Q: What was the Earth like million of years ago?

A: Millions of years ago, there is no life on the Earth. The temperature of the Earth was scorching,…

Q: Why are scientists interested in the primordial synthesis of organic molecules when it comes to the…

A: Introduction: The Oparin-Haldane hypothesis proposed that inorganic molecules in the atmosphere of…

Q: Based on the Origin of Life by John H. McClendon, what are the implications of each theories?

A: Origin of life by John H.McClendon It explains the Origin of the atmosphere ocean, and earth crust…

Q: Which scientists investigated the origins of organic molecules on the primordial Earth?

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: the landmark experiment by Miller and Urey, and various repeats of this experiment, did not…

A: Introduction: The mentioned experiment was carried out to understand the various ways in which the…

Q: Give the biological information in DNA generate an enormous diversity of living organisms?

A: Biodiversity is referred to as an occurrence of different times of ecosystems, species with whole…

Q: Table 1: Characteristics of DNA Questions To what maior group of biomolecules does DNA belong? wers…

A: INTRODUCTION DNA Deoxyribonucleic acid is the heriditary material present in humans and other…

Q: Researchers have proposed that early life on Earth used RNA as its source of genetic information and…

A: There are two types of nucleic acids: DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). Most…

Q: During which decade were there the most contributions leading to the understanding of DNA?

A: Rosalind Franklin made an essential commitment to the revelation of the twofold helix design of DNA,…

Q: Which molecule -DNA or RNA- do scientist believe was found in the first life form on Earth? Why do…

A: DNA is the double helix structure. RNA is the signal helix structure.

Q: Based on the Origin of Life by John H. McClendon, how did life on earth start based on the different…

A: John H. McClendon published the Origin of Life in 1999. There he mentioned the origin of the…

Q: Historically, how has the origin of life on earth been explained?

A: Introduction The mythological explanation for the phenomenon of life on Earth is the most frequently…

Q: How have changes in earths systems contributed to the evolution of life?

A: Earth and its environment are persistently modified. Plate tectonics move the landmasses, raise…

Q: The Miller experiment did not create life, nor did the gases used resemble Earth’s first atmosphere…

A: In 1952 Miller and urey conducted experiments to hypothesize the formation of complex organic…

Q: Based on the Origin of Life by John H. McClendon, what are the implications of each of his theories?

A: Origin of Life, by John H. McClendon is a book which discusses the origins of the atmosphere,…

Q: If RNA played a key role in the origin of life,why do cells now use DNA for information storage and…

A: Introduction  DNA and RNA are the main genetic material found in all the species irrespective of…

Q: How did the Miller-Urey experiment impact the way scientist think about the origins of life

A: The slow and gradual change over a period of time is called evolution. There are many theories of…

Q: What evidence is there for the hypothesis that life originated on Earth by the creation and…

A: The origin of life on the earth is both an interesting and a difficult question to answer. We have a…

Q: What is Molecular Similarities of All Life-Forms?

A: The study of living things is called biology. Their morphology, physiology, anatomy, behavior,…

Q: Based on the Origin of Life by John H. McClendonn, which of his theories is the most plausible?

A: Introduction John H. McClendon's Book, Origin Of Life, Is A Informational Book On The Origins Of…

Q: Which of the following was likely MOST important for life to begin existing on Earth?   A. sunlight…

A: The correct answer is-  C. Sunlight

Q: how does variation in molecules can provide greater fitness?

A: Biomolecules such as DNA are important because they give instructions for the formation of proteins.…

Q: How does the autotroph hypothesis explain the origin of life?

A: Autotrophic hypothesis :- This theory states that first living organisms on earth were autotrophs…

Q: Name the two scientists who set up a special experiment to prove Oparin’s theory of origin of life?

A: The "Oparin's theory of origin of Life" suggests that life gradually arose from inorganic molecules,…

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.