Some information about bacteria and viruses is arranged in the table below.
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Which argument about bacteria and viruses is supported by this information?
Which argument about bacteria and viruses is supported by this information?
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Some information about bacteria and viruses is arranged in the table below.
Which argument about bacteria and viruses is supported by this information?
To determine the evolutionary history and relationships among organisms, scientists gather evidence from a wide variety of sources including fossil evidence, comparative anatomy, and molecular biology. A phylogenetic tree of the 9 major phyla is shown.
Which of the following statements best explains the phylogenetic tree shown?
A scientist is investigating a specimen in the laboratory. The scientist created the data table based on observations.
How would the specimen be classified?
Organisms can be organized by their similarities and differences. The incomplete cladogram shows the relationship between some invertebrates based on their body structures.
*click image to enlarge
At which taxonomic level do the two most closely related cats from the chart pictures separate?
An unknown organism was discovered to be multicellular and can be seen without a microscope.
The bar graph shows the numbers of some of the organelles in one of the cells from the discovered organism. From which kingdom is this organism?
Which one of these is most closely related to the organism above?
*click table to enlarge
Scientists have discovered a new organism in the rainforest. The organism is multicellular with a nucleus and cell wall and obtains energy through decomposition.
Scientists have discovered a new organism in the rainforest. The organism is multicellular with a nucleus and cell wall and obtains energy through decomposition.
Based on its characteristics and the information in the table above, construct an argument to identify the appropriate clade for its classification.
Scientists have been studying the following cladogram:
They have a set of characteristics that need to be added to the cladogram and they are trying to determine which characteristic fits into the location marked with a red X on the cladogram.
*click table to enlarge
Based on this information, which characteristic should be placed at the location of the red X to improve the model?
A biologist discovers two new species of organisms, one in Africa and one in South America. The organisms resemble one another closely.
Which type of evidence would be LEAST useful in determining whether these organisms are closely related or are the products of convergent evolution?
Portions of the protein sequence alignments for a group of ciliates are shown.
Which of the following phylogenetic trees BEST represents this data?
The correct sequence from the most to least comprehensive taxonomic level is
A student used a microscope to study four members of the phylum Ciliophora. Members of this phylum move when propelled by hundreds of tiny cilia.
*click image to enlarge
Although these organisms belong to the same phylum, they are classified as different —
The strongest evidence that supports the endosymbiotic origin of eukaryotic organelles is the homology (similarities) between currently living prokaryotes and
Based on this classification scheme, the European otter and the leopard are in
the same —
*click image to enlarge
The evolutionary relationships among major groups of seed plants are uncertain. The cladogram above is one possible representation of these relationships.
Which of the following can be inferred from this cladogram of the seed plants?
Use the diagram below to answer the following questions.
This image appears in a biology textbook.
Using the information below, complete the cladogram by dragging and dropping the derived characters to their correct locations.
Amino acids sequences show relatedness between species. This chart represents amino acids that are coded from different combinations of mRNA codons.
Which amino acid sequence can be coded from the DNA sequence CAG - TAG - CGA?
A common ancestor for species C and E could be at position number
The most closely related species are
Which species is extinct?
Which of the terms best identifies the image?
Which of the following statements is true about relatedness between the organisms?
What trait was last developed in the most recent common ancestor shared by the hamster and chimpanzee?
Which two organisms are most related based on the amino acid sequence chart below?
