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The fossil record is least likely to result in changes to a phylogenetic tree compared to DNA sequencing and the discovery of new species. Fossils provide snapshots of past organisms and their evolutionary relationships, but they may not reflect the full genetic diversity. In contrast, DNA sequencing offers detailed genetic information that can lead to significant revisions in understanding evolutionary lineages, and the discovery of new species can fill gaps and reveal previously unknown relationships.
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Which form of evidence is MOST exact in determining the accuracy of a cladogram?
Molecular evidence, particularly DNA and protein sequencing, is the most exact form of evidence for determining the accuracy of a cladogram. This type of data provides detailed insights into the genetic relationships between organisms, allowing for precise comparisons of evolutionary divergences. Additionally, molecular evidence can reveal nuances in evolutionary history that morphological traits may overlook, leading to more accurate phylogenetic trees.
Phylogenetic hypotheses are strongest when?
Phylogenetic hypotheses are strongest when they are supported by multiple lines of evidence, such as morphology, genetics, and fossil data. Additionally, hypotheses that are consistent with principles of evolutionary theory and show high levels of statistical support are considered strong.
What is one new line of evidence supporting evolution that scienists learned after Darwin's book was published?
One new line of evidence supporting evolution that scientists learned after Darwin's book was published is the discovery of DNA and the understanding of how genetic information is passed down from one generation to the next. DNA sequencing has provided clear evidence of the relatedness of different species and how they have evolved over time.
What is the most accurate type of evidence in classifying organisms?
The most accurate type of evidence in classifying organisms is molecular evidence, particularly DNA and RNA analysis. This genetic data allows for precise comparisons of genetic sequences among different species, revealing evolutionary relationships that may not be apparent through morphological characteristics alone. Molecular techniques, such as phylogenetic analysis, provide insights into the lineage and divergence of species, leading to more accurate classifications.
Which of the cluster of organisms distinct from other clusters that shows evidence of a pattern of ancestry and descent?
The cluster of organisms that shows evidence of a pattern of ancestry and descent is known as a clade. A clade includes an ancestor and all its descendants, reflecting evolutionary relationships. Clades are identified through phylogenetic trees, which illustrate these connections based on shared characteristics and genetic data, distinguishing them from other clusters that may not share a common ancestor.
Which type of evidence is least likely to result in changes to a phylogenetic tree?
The type of evidence least likely to result in changes to a phylogenetic tree is morphological evidence based on highly conserved traits. These traits are often slow to evolve and may not reflect recent evolutionary relationships, leading to a more stable tree structure. In contrast, molecular evidence, such as DNA sequencing, can reveal more nuanced and recent divergences among species, often resulting in significant changes to phylogenetic trees.
What evidence do scientists use to make phylogenetic trees?
Phylogenetic trees represent hypotheses about the evolutionary relationships among a group of organisms. A phylogenetic tree may be built using morphological (body shape), biochemical, behavioral, or molecular features of species or other groups.
Which form of evidence is MOST exact in determining the accuracy of a cladogram?
Molecular evidence, particularly DNA and protein sequencing, is the most exact form of evidence for determining the accuracy of a cladogram. This type of data provides detailed insights into the genetic relationships between organisms, allowing for precise comparisons of evolutionary divergences. Additionally, molecular evidence can reveal nuances in evolutionary history that morphological traits may overlook, leading to more accurate phylogenetic trees.
What is phylogenetic constraint?
Phylogenetic Constraint is like a basic body plan. It can be modified (what evolution does) but it can't be fully changed. Vestigial features (things like the human appendix which is a remnant of our ancestors, but is no longer used) provide evidence of common ancestry and phylogenetic constraint. :)
What are 3 pieces of evidence that scientists combine to determine evolutionary relationships among species?
Scientists combine evidence from DNA sequencing, comparative anatomy, and fossil records to determine evolutionary relationships among species. By examining similarities and differences in these three sources of evidence, scientists can construct phylogenetic trees to understand how different species are related to each other through evolution.
When scientists try to determine how closely related species are what evidence do the examine?
Scientists examine various types of evidence to determine how closely related species are, including genetic data, morphological traits, and fossil records. Genetic analysis, such as DNA sequencing, allows researchers to assess similarities and differences in the genetic material of different species. Morphological comparisons involve studying physical characteristics, while fossil records provide insights into evolutionary history and lineage. Together, these approaches help construct phylogenetic trees that illustrate evolutionary relationships.
Did dromeosaurs have feathers?
Yes, there is strong phylogenetic evidence suggesting that all dromaeosaurids possessed them. This evidence comes from phylogenetic bracketing, which allows paleontologists to infer traits that exist in a clade based on the existence of that trait in a more basal form. In other words, evidence of raptors having feathers has been found in the bones themselves as well as fossil prints.
What is a discovery of evidence in a criminal case?
The process of discovery in court is where the government present its evidence to the defense, and vice versa.
Is it permissible to submit evidence after the discovery phase has concluded?
No, it is generally not permissible to submit evidence after the discovery phase has concluded in a legal proceeding.
Why do phylogenetic trees provide strong evidence of evolution?
With the nested hierarchy of phylogenetic trees in front of you, showing in general relief the biochemical, physiological, behavioral relatedness extended from the forked nodes, and going along through time one sees evolution in action. Change over time.
Why file Motion discovery?
A discovery motion lets you know what evidence the other side has. Normally, you are not allowed to surprise the other side with evidence they didn't know about, unless their lawyer was too dumb or distracted to file a discovery motion. Also, they may have evidence that helps you, that you will never find out about except through discovery.
What evidence indicates that annelids and mollusks are closely related?
Gene based phylogenetic studies indicate that annelids and mollusks share a recent common ancestor
