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Is Common ancestry is the only way that different species can share physical similarities?
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How do the similarities found in different species of mammals reflect evolutionary relationships?
I and II only
What characteristics of the species level of organization distinguishes two similar organisms such as ducks and geese as different species?
Organisms are grouped into species according to their outer similarities so ducks and geese must vary enough to be categorized differently.
What characteristic of the species level of organization distinguishes two similar organisms such as ducks and geese as different species?
Organisms are grouped into species according to their outer similarities so ducks and geese must vary enough to be categorized differently.
What was the major proposal in Charles Darwin's On the Origin of the Species?
that all organisms are linked by common ancestry
Which biologist first proposed that all organisms share a common ancestry?
Charles Darwin, "Origin of the Species"
What determines whether two species are in the same genus?
Two species are typically placed in the same genus based on shared physical characteristics, genetic similarities, and common evolutionary ancestry. Taxonomists consider a combination of these factors when determining the classification of species into different genera.
What are some artifacts or evidence that you can look at to study common ancestry?
Scientists can study common ancestry through artifacts like fossils, genetic similarities, and anatomical structures in species. Fossils provide evidence of extinct species, genetic similarities show shared ancestry between organisms, and anatomical structures reveal common traits inherited from a common ancestor.
What does descent with modification imply bout the ancestry of different species?
that species today look different from their ancestors
What is notion of homology?
Homology is a concept in biology that refers to similarities between different species due to shared ancestry. In genetics, homology refers to similar DNA sequences found in different species that are inherited from a common ancestor. Homologous structures in anatomy are organs or body parts that have a similar underlying structure but may have different functions in different species.
Is it true that the degree of dissimilarity in DNA sequences is an indication of how long ago two species shared a common ancestor?
There is a direct proportional relationship between common ancestry and degree of DNA similarities. The common ancestry will determine the degree of the similarities in the DNA.
What is the best evidence that organisms of two different species share a common ancestor?
The best evidence that organisms of two different species share a common ancestor is the presence of homologous structures. These structures have similar features due to shared ancestry, even if they serve different functions in different species. Additionally, similarities in DNA sequences and developmental patterns can indicate a common evolutionary history.
What are the differences between the morphological species concept biological species concept and phylogenetic species concept?
The morphological species concept differentiates species by their physical traits, basically. The biological species concept defines a species as generally organisms that breed with others of the same species; rather a genetic isolation concept. The phylogenetic concept is based on evolutionary relationships and is the concept used by cladists.
Evolution that leads to similarities in different species?
Convergent:)
Which of these might be used to determine common ancestry of two different species of plants?
fossil evidence :)
What is a developmental similarity?
A developmental similarity refers to shared characteristics or processes that occur during growth and maturation in organisms. It can include similarities in physical traits, behavior, or developmental stages between different species or individuals within a species.
Scientists group species on an evolutionary tree based on what?
gene similarities, physical structures, and fossil record.
Why are physical similarities among species not always the result of being related?
because unrelated species can evolve similar traits through convergent evolution.
