15
Directions: Select the correct entries in the table.
The nucleotide sequences of four species are shown in the table below. Select the nucleotide sequences of the two species that
are most closely related.
Species Nucleotide sequence of gene ABX
TAC ATA CGC GGG ACC TTT AGT GGG GCC CCC ACT
TAC ATA CCC CCG ACC TAT CGC GGG GCG CCC ACT
TAC ATA CCC CCG ACC TTT CGC GGG GCG CCC ACT
TAC ATA CGG GGG AAA TTT CGC TTT GCG CGC ACT

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last

The production of cells during mitosis into specialized function is recombination or differentiation

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.