What is the molecule that can account for both the unity and the diversity of life?
Chapter 1
| Question | Answer |
|---|---|
| What is the molecule that can account for both the unity and the diversity of life? | DNA |
| Which of the following domains is prokaryotic? | Archaea |
| Which kingdom within the domain Eukarya is composed of organisms that are generally unicellular (single-celled)? | Protista |
Which of these is the main scientific explanation for the unity and diversity of life on Earth?
The scientific explanation for the unity and diversity of organisms–as well as for the adaptation of organisms to their particular environments–is evolution: the concept that the organisms living on Earth today are the modified descendants of common ancestors.
How does evolution explain the diversity of life?
The fact that biology, as a science, has such a broad scope has to do with the tremendous diversity of life on earth. The source of this diversity is evolution, the process of gradual change during which new species arise from older species.
How does evolution explain the unity?
According to Darwin, the unity in all the living things can be observed through a process called descent with modification. He proposed that the relationship between individuals can be traced using an evolutionary tree to show how modern organisms are all linked to one another by their common ancestors.
Which of the following is an example of unity in diversity quizlet?
Which of the following is an example of "unity of diversity"? All organisms, including prokaryotes and eukaryotes, use essentially the same genetic code. The structure of DNA is the same in all organisms.
How does biological evolution explain both unity and diversity of life?
Evolution thus explains both the similarities of genetic material across all species and the multitude of species existing in diverse conditions on Earth—its biodiversity—which humans depend on for natural resources and other benefits to sustain themselves.
How does the concept of descent with modification explain both the unity and diversity of life?
First proposed by Charles Darwin in some of his early works, the theory of descent with modification states that species have evolved over time through the accumulation of incremental changes, eventually creating new forms that are so different as to be classified as species.
What is an example of unity in diversity biology?
One excellent symbol to use when explaining the unity and diversity of life is a rainbow — each color of a rainbow can exist separately, but in the color spectrum, all the colors are organized in a special order and create a unity.
What is the diversity of life?
Biological diversity, or biodiversity, refers to all of the variety of life that exists on Earth. Biodiversity can be described and measured at three different levels: species, genetic, and ecosystem diversity. Species diversity refers to the number of different species in an ecosystem or on Earth as a whole.
What is the process of biological evolution?
Biological evolution is the change in inherited traits over successive generations in populations of organisms. Evolutionary modification of traits occurs when variation is introduced into a population by gene mutation or genetic recombination or is removed by natural selection or genetic drift.
What are the 4 processes of evolution?
They are: mutation, non-random mating, gene flow, finite population size (genetic drift), and natural selection.
Which of the following is an example of unity in diversity in biology?
Which of the following is an example of "unity in diversity"? *Cilia and flagella in all eukaryotes have the same basic structure.
What is an example of unity in diversity?
It shows Europeans have come together irrespective of differences. India is another brilliant example of Unity in Diversity. In India, people of diverse religions, cultures, castes, sects, etc. have been living together. Furthermore, they have been living together for many centuries.
Which of the following is required for the process of evolution by natural selection to occur?
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
What is descent of modification?
Simply put, descent with modification means that traits are passed down from generation to generation and sometimes undergo changes or modifications over time. These changes may be caused by Natural Selection or even a mutation of DNA. The term became popular when Charles Darwin used it in his book The Descent of Man.
What is the unity and diversity of cells?
Another important aspect of life is its vast diversity built on a base of underlying unity. For example, organisms as outwardly dissimilar as a bacterium, a human, and an oak tree are all composed of the same basic structural element, the cell, which in turn have many similar subcellular and molecular components.
What is meant by the unity of life?
Repeated speciation occurs with the continual divergence of life forms from an ancestral cell through natural selection and evolution. Our shared cellular structures, nucleic acid, protein and metabolic chemistries (the 'unity' of life) supports our common ancestry with all life.
What caused the diversity of life?
Evolution and diversity result from the interactions between organisms and their environments and the consequences of these interactions over long periods of time. Organisms continually adapt to their environments, and the diversity of environments that exists promotes a diversity of organisms adapted to them.
What do u mean by speciation?
Speciation is how a new kind of plant or animal species is created. Speciation occurs when a group within a species separates from other members of its species and develops its own unique characteristics.
What is adaptation in biology?
In evolutionary theory, adaptation is the biological mechanism by which organisms adjust to new environments or to changes in their current environment.
What is the process of evolution?
Evolution is a process that results in changes in the genetic material of a population over time. Evolution reflects the adaptations of organisms to their changing environments and can result in altered genes, novel traits, and new species.
What are the 5 processes of evolution?
They are: mutation, non-random mating, gene flow, finite population size (genetic drift), and natural selection.
What is meant by unity and diversity?
Unity in diversity means oneness in the varieties. India is the best country proving this concept for many years. India is a country where it is very clear to see unity in diversity because people of many religions, race, cultures and traditions live together.
What does it means by unity in diversity?
Unity in diversity is used as an expression of harmony and unity between dissimilar individuals or groups.
Which of the following is required for the process of evolution by natural selection to occur quizlet?
The three conditions that must be met in order for natural selection to occur and result in evolutionary change are traits, inherited, and selection pressure.
Which of the following must exist in a population before natural selection can act upon that population?
for natural selection to occur, variation must exist in a population.
What is biological in geography?
Introduction. Biogeography is a broad and holistic science that examines spatial patterns of biological diversity. Biogeography is a subfield of the discipline of geography (or biology, depending on area of specialization), the study of the spatial distribution of phenomena over the earth.
What would you call the diversity of life?
Biodiversity refers to the variety of living species on Earth, including plants, animals, bacteria, and fungi.
What biological process is responsible for biodiversity?
Genetic diversity in a population comes from two main sources: mutation and sexual reproduction. Mutation, a permanent change in DNA sequence is the ultimate source of new genetic variation in any population. An individual that has a mutated gene might have a different trait than other individuals in the population.
What is the process of speciation?
Speciation occurs when a group within a species separates from other members of its species and develops its own unique characteristics. The demands of a different environment or the characteristics of the members of the new group will differentiate the new species from their ancestors.