How does the concept of descent with modification explain both the unity and diversity of life? The idea of descent is
that similar organisms came from one prehistoric/ancient organism
. … This created diversity as organisms developed modifications to the original ancestor.
How does Darwin’s descent with modification relate to diversity of organisms today?
Darwin proposed that species can change over time, that new species come from pre-existing species, and that all species share a common ancestor
. … Darwin referred to this process, in which groups of organisms change in their heritable traits over generations, as “descent with modification.” Today, we call it evolution.
How does it mean that there is both unity and diversity of life?
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)
. 3) Adaptions to a particular enviroment explains the diversity of life.
How does the concept of descent with modification explain both the unity and diversity of life? The idea of descent is that similar organisms came from one prehistoric/ancient organism. … This
created diversity as organisms developed modifications to the original ancestor
.
How does Darwin’s principle of descent with modification explain the characteristics of today’s species?
How does Darwin’s principle of descent with modification explain the characteristics of today’s species? Descent with modification
explains why organisms living today may be different from their ancestors
,for example, by having different structures. … According to the bible, people and species were created by God.
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 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.
What is an example of descent with modification?
Which example illustrates descent with modification—a change in gene frequency
Is descent with modification a fact?
Descent with modification sounds fancy and complicated – but it isn’t! … Descent with modification is
simply passing traits from parent to offspring
, and this concept is one of the fundamental ideas behind Charles Darwin’s theory of evolution.
What gives evidence of common descent?
Evidence for common descent comes from
the existence of vestigial structures
. These rudimentary structures are often homologous to structures that correspond in related or ancestral species. … The existence of vestigial organs can be explained in terms of changes in the environment or modes of life of the species.
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 the difference between descent with modification and natural selection?
Descent with modification is the evolutionary mechanism that produces change in the genetic code of living organisms. There are three mechanisms for such changes and the fourth mechanism, natural selection, determines which descendants survive to pass on their genes, based on environmental conditions.
What is the principle of use and disuse quizlet?
Explain Lamarck’s principle of use and disuse.
Lamarck said that structures that are used develop and are passed on to offspring, whereas structures that are not used are not passed on.
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 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.
Why do females choose mates?
Females tend
to be the choosier sex
when it comes to selecting a mate, part- ly because males can produce millions of sperm, whereas females’ eggs are few and far between. Thus, females may be more selective because they have more invested in each gamete and in the re- sulting offspring.
