Horizontal Gene Transfer

What is horizontal gene transfer?

• Genetic change passed on to daughter cell

• Genetic change acquired from another cell

Which of the following is NOT a mechanism of horizontal gene transfer in bacteria?

• Transformation

• Transduction

• Binary Fission

• Conjugation

In transduction, genes are transferred between bacteria via:

• Free-floating DNA in the environment

• Pili

• Bacteriophages

• Plasmids

A replicon is an autonomous piece of DNA that has an origin of replication and can direct its own replication.

• True

• False

Tags

NGSS.HS-LS3-2

DNA sequences that bear similarity between each other are said to be

• homologous

• homogenous

Tags

NGSS.HS-LS3-2

The rearrangement in the genetic information of a cell by joining segments of DNA from two different organisms is called

• rearrangement

• recombination

• replication

Tags

NGSS.HS-LS3-2

In transformation, bacteria acquire genetic material from:

• • Other bacteria via direct contact

• Viruses during infection

• The surrounding environment

• Plasmids during conjugation

Why is horizontal gene transfer significant in bacterial populations?

• • It creates diversity by introducing new genetic material.

• • It allows bacteria to replicate more efficiently.

• • It ensures that bacteria remain genetically identical.

• • It reduces the risk of mutations within the genome.

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4