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I B Bio Hl: 3.1

QuestionAnswer
Describe the “traditional” definition of a species. Individuals in the same species produces fertile offspring(s).
Outline a few of the limitations to the use of this species concepts when it comes to asexually reproducing organisms - To adequately classify asexually reproducing organisms (e.g., bacteria, archaea, and some eukaryotes) - Some animals may have similar characteristics but are not the same species
Describe the process of horizontal gene transfer in bacteria a. Transformation: Taking up "naked" DNA from the environment.
Describe the process of horizontal gene transfer in bacteria b. Transduction: DNA moved from one bacterium to another by a virus (bacteriophage).
Describe the process of horizontal gene transfer in bacteria (3rd Part) c. Conjugation: Direct transfer of DNA (usually a plasmid) between two bacteria via a physical bridge called a pilus.
What is DNA barcode A short, standardized genetic sequence from a specific gene (like the (CO1 gene in animals) used to identify a species.
Why Are DNA Barcodes Useful It allows scientists to identify a species from just a tiny fragment (like a piece of leaf or a drop of water containing "environmental DNA"), even if the organism is in a larval stage or damaged.
Created by: Cocoalover
 

 



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