Question

Given below are two statements:
Statement (I): SSU rDNA is a good phylogenetic marker for elucidating species-level phylogenetic relationships within a genera.
Statement (II): SSU rDNA phylogenetic marker is the most reliable and appropriate phylogenetic marker for nematode molecular taxonomy.
In light of the above statements, choose the most appropriate answer from the options given below:

• A. Both Statement (I) and Statement (II) are true
• B. Both Statement (I) and Statement (II) are false
• C. Statement (I) is true but Statement (II) is false
• D. Statement (I) is false but Statement (II) is true

Hint:

Remember the general rule for molecular taxonomy:
- SSU (18S) is highly conserved and best for deep, high-level phylogenetics (orders, classes).
- LSU (28S D2-D3) and ITS regions are more variable and better suited for species-level diagnostics and taxonomy within a genus.

Answer 1

The Correct Option is B