Frietson Galis
Naturalis
86 Papers
1.1K Citations
Frietson Galis is an academic researcher from Naturalis. The author has contributed to research in topics: Population & Biology. The author has an hindex of 32, co-authored 84 publications. Previous affiliations of Frietson Galis include VU University Amsterdam & Leiden University.
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Papers
Why do almost all mammals have seven cervical vertebrae? Developmental constraints, Hox genes, and cancer.
TL;DR: It is proposed that changes in Hox gene expression, which lead to changes in the number of cervical vertebrae, are associated with neural problems and with an increased susceptibility to early childhood cancer and stillbirths, which prevents the deleterious pleiotropic effect of neonatal cancer when changes in cervical vertebral number occur.
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Sexual Dimorphism in the Prenatal Digit Ratio (2D:4D)
TL;DR: The 2D:4D ratio, thus, seems to increase after birth in both men and women, with the second digit growing faster than the fourth digit (positive allometric growth of digit two) and perhaps more so in women than in men.
Phenotypic plasticity and the possible role of genetic assimilation: Hypoxia‐induced trade‐offs in the morphological traits of an African cichlid
TL;DR: The results suggest that both phenotypic plasticity and genetic assimilation are involved in the process of adaptation and evolutionary change in the cichlid Pseudocrenilabrus multicolor victoriae.
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Testing the vulnerability of the phylotypic stage: on modularity and evolutionary conservation.
TL;DR: This study test the plausibility of the hypotheses that the phylotypic stage is conserved due to the intense and global interactivity occurring during that stage and presents an argument on why the absence of modularity in the inductive interactions may also be the root cause of the conservation of the much discussed temporal and spatial colinearity of the Hox genes.
Why are there so many cichlid species
TL;DR: Even with lower estimates of species number and higher estimates of the age of the species flock, the haplochromine cichlids still present one of the most dramatic examples of speciation and diversification in vertebrates.
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