Evolution is considered a unifying theory of biology. It explains the unity and diversity of life. 1)
Descents
from a common ancestor explain the unity of life. 2) the unity of life = living things share a common chemistry and cellular structure (DNA, RNA and cell membrane).
How does evolution explain both the diversity and the unity of life?
How does evolution explain the unity and diversity of life? 1)
Descents from a common ancestor explain the unity of life
. 2) the unity of life = living things share a common chemistry and cellular structure (DNA, RNA and cell membrane). 3) Adaptions to a particular enviroment explains the diversity of life.
How does the theory of evolution explain both the unity and diversity of life on Earth and what does that mean for human health?
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 did natural selection result in unity and diversity?
Natural selection was Charles Darwin’s theory for how evolution led to the structural diversity of species. New
species arise when beneficial traits are naturally selected from genetically different individuals in a population
, with the concomitant culling of less fit individuals from populations over time.
How does evolution explain 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 is a good example of Intrasexual selection?
Intrasexual selection, on the other hand, occurs between members of the same sex. For example,
male sea lions compete for dominance over rookeries of females
. Here, intrasexual selection acts on the physiology of the sea lion, to make it large enough to compete with other males for a group of females.
How do you explain natural selection?
Natural selection is
the process through which populations of living organisms adapt and change
. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others.
What is natural selection example?
Natural selection is the process in nature by which organisms better adapted to their environment tend to survive and reproduce more than those less adapted to their environment. For example,
treefrogs are sometimes eaten by snakes and birds
. … This explains the distribution of Gray and Green Treefrogs.
What four factors affect Darwin’s evolution?
Evolution is a consequence of the interaction of four factors:
(1) the potential for a species to increase in number, (2) the genetic variation of individuals in a species due to mutation and sexual reproduction
, (3) competition for an environment’s limited supply of the resources that individuals need in order to …
What is Lamarck’s theory?
Lamarckism,
a theory of evolution based on the principle that physical changes in organisms during their lifetime
—such as greater development of an organ or a part through increased use—could be transmitted to their offspring.
Why is diversity important in evolution?
Why is genetic diversity important? Genetic diversity is important
because it could ensure that certain groups of individuals, species, or populations will be able to adapt to certain environmental factors
. … Thus, genetic variation helps the species in terms of its adaptability, survival, and its evolution.
What is responsible for the diversity of life?
The source of this diversity is
evolution
, the process of gradual change during which new species arise from older species. Evolutionary biologists study the evolution of living things in everything from the microscopic world to ecosystems.
What’s the evidence for evolution?
Five types of evidence for evolution are discussed in this section:
ancient organism remains, fossil layers, similarities among organisms alive today
, similarities in DNA, and similarities of embryos.
What Animals use Intrasexual selection?
Intrasexual selection deals with members of the same sex in a given species. An example of this can be seen in
elephant seals
, polar bears, or any other animal that fights a same sex individual for mating, food, or territorial purposes.
What is fitness of natural selection?
Biologists use the word fitness to describe how good a particular genotype is at leaving offspring in the next generation relative to how good other genotypes are at it. … Fitness is a handy concept because it lumps everything that matters to natural selection (
survival, mate-finding, reproduction
) into one idea.
What is a good question to ask about natural selection?
- What types of questions are addressed by natural selection? …
- Who was Darwin? …
- What is the theory of Natural Selection? …
- What is the difference between artificial selection and natural selection? …
- What is the survival of the fittest? …
- How is natural selection related to genetics?
