Comparisons of Entire Genomes Among Prokaryotes Have Revealed a Stable

question 69

Multiple Choice

Comparisons of entire genomes among prokaryotes have revealed a stable core of crucial genes that are unaffected by lateral gene transfer.Which statement concerning this discovery is false?

• A) Genes involved in fundamental cellular processes are unlikely to be replaced by lateral gene transfer.
• B) Lateral gene transfer enables rapid acquisition of traits adapted to specific environments.
• C) The discovery will facilitate understanding of phylogenetic relationships of prokaryotes.
• D) The results must be treated cautiously because of the small percentage of prokaryotes for which entire genomes are known.
• E) Lateral gene transfer makes reconstructing evolutionary patterns among prokaryotes almost impossible.

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Definitions:

Incisional Biopsy

A surgical procedure where a small cut is made in the skin to remove a sample of tissue for examination, usually to diagnose diseases or conditions.

Excisional Biopsy

A surgical procedure where an entire lump or suspicious area is removed for diagnostic examination.

Sentinel Lymph Node

The first lymph node to which cancer cells are likely to spread from a primary tumor, often used in surgeries to assess cancer spread.

Needle Biopsy

A minimally invasive procedure where a small sample of tissue is collected for examination using a needle.