Concept Check: NYS Relationships and Biodiversity

Tests were performed to help identify the person who committed a crime. Lane D contained DNA from evidence found at the crime scene. Lanes A, B, and C contained DNA from each of the three suspects.

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Identify the technique used to obtain the results seen in the diagram.

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Based on the data, which lane most likely contained DNA from the suspect who committed the crime? Support your answer

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Identify the lane that contained the band with the shortest fragments of DNA. Support your answer.

The Elephant Shrew 

The elephant shrew spends its days searching the leaf litter on the forest floor for insect prey. When first discovered, due to structural similarities, the elephant shrew was classified with other shrews and their relatives. However, scientists recently reclassified the elephant shrew, as shown in the evolutionary tree below:

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The new, more accepted classification of the elephant shrew is most probably based on an analysis of

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According to the new evolutionary tree, elephant shrews are most closely related to

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Base your answer on the information and chart below and on your knowledge of biology.
The chart represents the results of gel electrophoresis of DNA from an unknown individual and four known individuals.

Before conducting an electrophoresis procedure, enzymes are added to DNA in order to

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The illustrations represent cross sections of two different plant stems.
A student compared two stem cross sections. Stem cross section A is from a plant that can be used to produce products with valuable medicinal properties. Stem cross section B is from a plant growing in the same area of the forest and its usefulness for producing medicines is unknown. The student concluded that the stem cross sections had many structural similarities and that the plant that produced cross section B would produce the same valuable medicinal products.

Is the student's conclusion valid?

DNA samples were taken from four different species of animals labeled A, B, C, and D. The diagram below represents the results of a procedure that separated the DNA fragments from each species.

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The fragments of DNA separated into these bands because of their

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The species that has the band containing the smallest DNA fragment for the sample that was sequenced is

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In an effort to determine how closely related several plant species are, a student performed the laboratory test shown below.

The method used by the student to compare plant extracts from the different species is

A Close Relative of the Elephant
A hyrax is an animal that has been called a rock rabbit and looks like a guinea pig. Fossil records show that hyraxes first appeared on Earth approximately 37 million years ago. As they evolved, some became mouse-sized, while some were the size of a horse. Some eventually adapted to marine life and are related to manatees, and some became grazers and are related to elephants.

A section of the mammalian evolutionary tree is shown below.

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Which number would indicate the most recent common ancestor of the hyrax, elephant, and manatee on the section of this mammalian evolutionary tree?

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If scientists want to determine the similarities in the DNA fragments in several plant species, they should

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During the Relationships and Biodiversity lab, simulated pigments from three plant species were compared to those in Botana curus. The results were similar to those represented below.
Based on the results of this comparison alone, is there enough information to conclude which of the other three species is most closely related to Botana curus?

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When provided with a sequence of bases in one segment of mRNA, the Universal Genetic Code Chart is used to

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In many parts of the world, plants are used as a source of medicine. Many of these plants are in danger of becoming extinct. It is therefore important for researchers to

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Which group of materials would be most useful to a student planning to separate a mixture of leaf pigments using paper chromatography?

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A rare tropical plant was found to have medicinal properties. A search was conducted to find other plants that are closely related to the rare plant. Which combination of characteristics would best identify the plant most closely related to the original one?

Identify the technique used to obtain the results seen in the diagram.

Based on the data, which lane most likely contained DNA from the suspect who committed the crime? Support your answer

Identify the lane that contained the band with the shortest fragments of DNA. Support your answer.

The new, more accepted classification of the elephant shrew is most probably based on an analysis of

According to the new evolutionary tree, elephant shrews are most closely related to

Base your answer on the information and chart below and on your knowledge of biology.The chart represents the results of gel electrophoresis of DNA from an unknown individual and four known individuals.Before conducting an electrophoresis procedure, enzymes are added to DNA in order to

The fragments of DNA separated into these bands because of their

The species that has the band containing the smallest DNA fragment for the sample that was sequenced is

In an effort to determine how closely related several plant species are, a student performed the laboratory test shown below.The method used by the student to compare plant extracts from the different species is

Which number would indicate the most recent common ancestor of the hyrax, elephant, and manatee on the section of this mammalian evolutionary tree?

If scientists want to determine the similarities in the DNA fragments in several plant species, they should

When provided with a sequence of bases in one segment of mRNA, the Universal Genetic Code Chart is used to

In many parts of the world, plants are used as a source of medicine. Many of these plants are in danger of becoming extinct. It is therefore important for researchers to

Which group of materials would be most useful to a student planning to separate a mixture of leaf pigments using paper chromatography?

A rare tropical plant was found to have medicinal properties. A search was conducted to find other plants that are closely related to the rare plant. Which combination of characteristics would best identify the plant most closely related to the original one?

Base your answer on the information and chart below and on your knowledge of biology.
The chart represents the results of gel electrophoresis of DNA from an unknown individual and four known individuals.

Before conducting an electrophoresis procedure, enzymes are added to DNA in order to

In an effort to determine how closely related several plant species are, a student performed the laboratory test shown below.

The method used by the student to compare plant extracts from the different species is