Table 2 Phylogenetically-controlled regression analyses
From: Selective constraints on protamine 2 in primates and rodents
Clade | Dependent value | Independent value | n | Slope | t | R2 | λ | p |
|---|---|---|---|---|---|---|---|---|
cleaved-Prm2 | ||||||||
 Primates | cleaved-Prm2 ω | log body mass | 12 | 0.02 | 0.23 | 0.14 | 1(ns,ns) | 0.82 |
log testes mass | 0.60 | 0.83 | 0.43 | |||||
 Rodents | cleaved-Prm2 ω | log body mass | 28 | 0.00 | 0.27 | 0.01 | 1(ns,ns) | 0.79 |
log testes mass | 0.00 | −0.35 | 0.73 | |||||
 Primates | relative head length | cleaved-Prm2 ω | 11 | 0.02 | 0.07 | 0.00 | 1(ns,ns) | 0.94 |
 Rodents | relative head length | cleaved-Prm2 ω | 26 | 0.18 | 1.83 | 0.12 | 0.41(ns,ns) | 0.08 |
  Rodents | relative head width | cleaved- Prm2 ω | 22 | 0.14 | 2.33 | 0.20 | 0.91(*,ns) | 0.03 |
  Rodents | sperm head elongation | cleaved- Prm2 ω | 22 | −8.07 | −3.11 | 0.32 | 0.91(*,ns) | 0.00 |
mature-Prm2 | ||||||||
 Primates | mature-Prm2 ω | log body mass | 12 | 0.02 | 1.19 | 0.27 | 0.86(ns,ns) | 0.26 |
log testes mass | 0.00 | 0.36 | 0.73 | |||||
 Rodents | mature-Prm2 ω | log body mass | 28 | −0.03 | −1.80 | 0.17 | 1(*,ns) | 0.09 |
log testes mass | −0.01 | −0.30 | 0.77 | |||||
 Primates | Arginine content (mature-Prm2) | log body mass | 12 | −1.32 | −1.49 | 0.21 | 1(*,ns) | 0.17 |
log testes mass | 0.47 | 0.48 | 0.65 | |||||
 Rodents | Arginine content (mature-Prm2) | log body mass | 28 | −0.02 | −0.36 | 0.03 | 1(*,ns) | 0.72 |
log testes mass | −0.02 | −0.52 | 0.61 | |||||
 Primates | relative head length | mature-Prm2 ω | 10 | −0.02 | −0.82 | 0.07 | 1(*,ns) | 0.43 |
 Rodents | relative head length | mature-Prm2 ω | 26 | 0.03 | 1.15 | 0.05 | 0(ns,ns) | 0.26 |
 Rodents | relative head width | mature-Prm2 ω | 22 | 0.03 | 0.94 | 0.04 | 0.96(*,ns) | 0.36 |
 Rodents | sperm head elongation | mature-Prm2 ω | 22 | −1.08 | −0.83 | 0.03 | 1(*,ns) | 0.41 |