Molecular Phylogeny

diagram with branches that represents the hypothesized phylogeny or evolution of a species or group; uses bioinformatics; morphological studies, and information from DNA studies.

• Lewis dot Diagram

• cladogram

• histogram

• Schematic Diagram

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NGSS.HS-LS4-2

Evolutionary history of a species.

• domain

• character

• phylogeny

• classification

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What is a molecular clock?

• A technique that uses a mutation rate to deduce when two or more lifeforms diverged

• A device to measure time

• A type of genetic mutation

• A method to measure DNA similarity

What is the purpose of a phylogenetic tree?

• To measure DNA similarity

• To create new species

• To stop evolution

• To illustrate evolutionary relationships among species

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NGSS.MS-LS4-1

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What is a clade?

• A group of organisms that includes an ancestor and all its descendants

• A process where species become extinct

• A type of genetic mutation

• A method to measure DNA similarity

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Which numbered location on the phylogenetic tree identifies characteristics shared by Species B, C, and D?

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What is a conserved gene?

• A gene that has remained essentially unchanged throughout evolution

• A gene that mutates rapidly

• A gene that causes extinction

• A gene that is only found in one species

Which of the following best describes molecular phylogeny?

• The study of evolutionary relationships using molecular data

• The classification of organisms based on physical traits

• The analysis of fossil records to determine species age

• The use of molecular clocks to measure time

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NGSS.HS-LS4-1

What is the primary tool used in molecular phylogeny to determine evolutionary relationships?

• Fossil records

• Morphological studies

• DNA sequencing

• Geological surveys

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In molecular phylogeny, what is the significance of a molecular clock?

• It measures the rate of DNA mutation over time

• It tracks the age of fossils

• It determines the physical traits of organisms

• It calculates the speed of evolutionary changes