II. MODEL 2 desirable properties, the chief of which is the absence of tree-level flavor-changing neutral currents, thus allowing the SU (2)$_{R}$ breaking scale to be as low as experimentally allowed by collider data. This became known in the literature as the alternative left-right model (ALRM) [4]. Here we explore further consequences of the DLRM, coming from the SU (2)$_{R}$ sector. Consider the gauge group SU (3)$_{C}$ × SU (2)$_{L}$ × SU (2)$_{R}$ × U (1) × S , where S is a global symmetry such that the breaking of SU (2)$_{R}$ × S will leave the combination L = S − T 3 R unbroken. This allows L to be a generalized lepton number which is conserved [1] in all interactions except those which are responsible for Majorana neutrino masses. The fermion content of the DLRM is given by This basic structure was already known many years ago [5, 6] but without realizing that n is a scotino, i.e. a dark-matter fermion. The scalar sector of the DLRM consists of one bidoublet and two doublets: as well as two triplets for making ν and n massive separately: Their assignments under S are listed in Table I. The Yukawa terms allowed by S are then ψ$_{L}$ Φ ψ$_{R}$ , Q$_{L}$ ˜ Φ Q$_{R}$ , Q$_{L}$ Φ$_{L}$ d$_{R}$ , Q$_{R}$ Φ$_{R}$ h$_{L}$ , ψ$_{L}$ψ$_{L}$ Δ$_{L}$, and ψ$_{R}$ψ$_{R}$ Δ$_{R}$, whereas ψ$_{L}$ ˜ Φ ψ$_{R}$ , Q$_{L}$ Φ Q$_{R}$ , and h$_{L}$d$_{R}$ are forbidden. Hence m$_{e}$ , m$_{u}$ come from Δ$_{L}$ =  $^{Δ}$$^{+}$ $_{$_{L}$/}$√$_{2}$ Δ ++ L Δ 0 L − Δ + $_{$_{L}$/}$√$_{2}$   , Δ$_{R}$ =  $^{Δ}$$^{+}$ $_{$_{R}$/}$√$_{2}$ Δ ++ R Δ 0 R − Δ + $_{$_{R}$/}$√$_{2}$   . (5) Φ =  $^{φ}$$^{0}$ 1 φ + 2 φ − 1 φ 0 2   , Φ$_{L}$ =  $^{φ}$$^{+}$ L φ 0 L   , Φ$_{R}$ =  $^{φ}$$^{+}$ R φ 0 R   , (4) Q$_{R}$ =   u h  $_{R}$ ∼ (3 , 1 , 2 , 1 / 6; 1 / 2) , h$_{L}$ ∼ (3 , 1 , 1 , − 1 / 3; 1) . (3) Q$_{L}$ =   u d  $_{L}$ ∼ (3 , 2 , 1 , 1 / 6; 0) , d$_{R}$ ∼ (3 , 1 , 1 , − 1 / 3; 0) , (2) ψ$_{L}$ =   ν e  $_{L}$ ∼ (1 , 2 , 1 , − 1 / 2; 1) , ψ$_{R}$ =   n e  $_{R}$ ∼ (1 , 1 , 2 , − 1 / 2; 1 / 2) , (1)