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Is the base or root of a phylogenetic tree where a population either becomes extinct or is currently living today?
Neither. The leaves of the tree represent descendants; the root or base represents the common ancestor of all organisms in that tree. This says nothing about which have survived and which have become extinct, only which appeared first and which developed from it.
What is the ancestor of eukaryotes?
Archaebacteria is probably more likely to be the ancestor of eukaryotes because of certain similarities, such as the ribosome of the two groups being much more similar to each other than the ribosomes of bacteria.
How are protists related to other eukaryotes?
Protists are eukaryotes that do not belong to plant, animal or fungi species. The way in which protists are related to other eukaryotes stems from the fact that among the current protists include groups whose ancestors were the reason why plants, animals and fungi exist today.
What does each branch in a cladogram represent?
A different derived trait
What is our evidence of Luca, the common ancestor that we can link all living organisms to?
Scientists have identified Luca as the Last Universal Common Ancestor, or the common ancestor of all living organisms. Evidence for Luca comes from the study of genetic material and the similarities found in the genetic code of different species.
What is the original ancestor that the plant-animal descended from?
Plants and animals share a common ancestor that was likely a unicellular, photosynthetic organism similar to modern-day green algae. This ancestor existed over a billion years ago, during the early evolution of eukaryotes. Through a process called endosymbiosis, some of these organisms developed the ability to perform photosynthesis, leading to the evolution of plants, while others evolved into various animal forms. Thus, the divergence between plants and animals began from this ancient common ancestor.
Do protist have more than one common ancestor?
Yes, protists are a diverse group of eukaryotic organisms that likely have multiple common ancestors. This group includes various lineages such as algae, protozoa, and slime molds, which evolved independently from different ancestral eukaryotes. As a result, protists do not share a single common ancestor but rather represent a polyphyletic assemblage derived from several distinct evolutionary paths.
Is the base or root of a phylogenetic tree where a population either becomes extinct or is currently living today?
Neither. The leaves of the tree represent descendants; the root or base represents the common ancestor of all organisms in that tree. This says nothing about which have survived and which have become extinct, only which appeared first and which developed from it.
What is the ancestor of eukaryotes?
Archaebacteria is probably more likely to be the ancestor of eukaryotes because of certain similarities, such as the ribosome of the two groups being much more similar to each other than the ribosomes of bacteria.
Which organisms have possible common ancestor?
All of them
What are Descendant organisms?
Descendant organisms are organisms that share many in common because they share a common ancestor.
How are protists related to other eukaryotes?
Protists are eukaryotes that do not belong to plant, animal or fungi species. The way in which protists are related to other eukaryotes stems from the fact that among the current protists include groups whose ancestors were the reason why plants, animals and fungi exist today.
Do some bacteria have chlorophyll in chloroplasts so they can conduct photosynthesis.?
No, bacteria generally do not have chloroplasts to begin with. Photosynthetic bacteria contain bacteriochlorophyll, which is similar to the chlorophyll found in plant cells that allow photosynthesis to take place. One distinct phylum of photosynthetic bacteria, known as cyanobacteria, are thought to be the ancestor organisms that eventually evolved into the chloroplasts that are found in modern plants.
What does each branch in a cladogram represent?
A different derived trait
Where are organisms that are closely related located on the tree of life?
Organisms that are closely related are located closer to each other on the tree of life. This means they share a more recent common ancestor compared to organisms that are more distantly related. The branching points on the tree of life represent the evolutionary relationships between different organisms.
What does the presence of Similar genes in very dissimilar organisms imply?
The presence of similar genes in very dissimilar organisms implies a common ancestor. This suggests that these organisms share a common evolutionary history and have inherited these genes from a common ancestor. The concept is known as homology.
What is the definition of ancestral trait?
An ancestral trait is a trait that is shared by a group of organisms and their common ancestor. It is a characteristic that has been inherited from a common ancestor and has been passed down through generations without change.
