DELTA-BLAST (select all that apply): Group of answer choices does not use a position-specific scoring matrix (PSSM) in calculating a score. has the option of using PSI-BLAST iteratively following an initial search. uses a Conserved Domain Database as part of its search. is a powerful tool to look for related proteins with larger evolutionary divergence.

the selections are on the explanations

Explanation:

BLAST is a commonly-used software package for comparing a query sequence to a database of known sequences.

Delta blast searches a database of pre-constructed PSSMs before searching a protein-sequence database, to yield better homology detection. It first uses RPS-BLAST to align a query sequence to conserved domains in CDD. DELTA-BLAST employs a subset of NCBI's (National Center for Biotechnology Information) Conserved Domain Database (CDD), which performs a sequence database search using a PSSM derived from the aligned domains.

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.