Howard Hughes Medical Institute 2011 Holiday Lectures on Science Creating Phylogenetic Trees from DNA Sequences Student Worksheet About This Worksheet This worksheet complements the Click and Learn.
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- Click the ‘Get Form’ button to access the worksheet and open it for editing.
- Begin with the first question, which asks you to explain how scientists determine relationships between organisms based on shared anatomical features. Carefully enter your response in the provided space.
- Next, address how DNA sequences are utilized to deduce evolutionary relationships in question two, ensuring that you provide a thorough explanation.
- For question three, describe one advantage of constructing phylogenetic trees using DNA comparisons instead of relying on anatomical features. Clearly articulate your reasoning.
- As you move on to question four, watch the video clip on slide 3 and create a simple tree that illustrates the evolutionary connections among gorillas, chimpanzees, humans, and orangutans. Use the drawing tools available in the editing interface.
- Continue answering the subsequent questions by watching embedded video clips and animations as indicated. These will support your understanding and enhance your responses, especially in questions relating to SNPs and indels.
- For the questions involving video clips, be sure to take note of key points shared in the videos that will inform your answers, such as in questions 10 to 17.
- As you progress, accurately fill out the required fields, ensuring that your responses are detailed and reflective of the knowledge gained from the activity slides.
- Once all questions have been completed, review your responses to confirm that all sections are filled out correctly.
- Finally, save your completed worksheet, and choose to download, print, or share it as needed for your educational requirements.
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What does it mean to compare apples to apples when referring to DNA sequences?
What does it mean to compare "apples to apples" when referring to DNA sequences from. A SNP in. - different organisms? The two sequences need to be aligned so that related parts of the sequences.
What are the 4 parts of a phylogenetic tree?
Recall that taxa are groups of organisms at any level of the Linnaean taxonomic system of classification (kingdom, phylum, class, order, family, genus, species). So the parts of a phylogenetic tree are the branches, nodes, and (in rooted trees) the root.
How do you make a phylogenetic tree with DNA sequences?
Building a phylogenetic tree requires four distinct steps: (Step 1) identify and acquire a set of homologous DNA or protein sequences, (Step 2) align those sequences, (Step 3) estimate a tree from the aligned sequences, and (Step 4) present that tree in such a way as to clearly convey the relevant information to others ...
What is meant by aligning DNA sequences?
In bioinformatics, a sequence alignment is a way of arranging the sequences of DNA, RNA, or protein to identify regions of similarity that may be a consequence of functional, structural, or evolutionary relationships between the sequences.
How can DNA sequences be used to determine relationships between organisms?
Scientists can estimate these relationships by studying the organisms' DNA sequences. As the organisms evolve and diverge, their DNA sequences accumulate mutations. Scientists compare these mutations using sequence alignments to reconstruct evolutionary history.
What is the DNA sequence phylogenetic tree?
Phylogenetic trees are diagrams of evolutionary relationships among organisms. Scientists can estimate these relationships by studying the organisms' DNA sequences. As the organisms evolve and diverge, their DNA sequences accumulate mutations.
How are DNA sequences used in classification?
Sequence classification is to predict the type of DNA sequence based on the similarity of its structure or function, and then predict the sequence function and the relationship between other sequences, and assist in the identification of genes in DNA molecules.
How do you create a phylogenetic tree from a DNA sequence?
Building a phylogenetic tree requires four distinct steps: (Step 1) identify and acquire a set of homologous DNA or protein sequences, (Step 2) align those sequences, (Step 3) estimate a tree from the aligned sequences, and (Step 4) present that tree in such a way as to clearly convey the relevant information to others ...
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