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Total of 141 results See all subject areas
developmental biology

Background. Parental absences in childhood are often associated with accelerated reproductive maturity in humans. These results are counterintuitive for evolutionary social scientists because reductions in parental investment should be detrimental for offspring,...

["Animal Behavior","Anthropology","Developmental Biology","Evolutionary Studies","Psychiatry and Psychology"]
doi:10.7287/peerj.preprints.345v1

In broiler chickens, genetic success for desired production traits is often shadowed by welfare concerns related to musculoskeletal health. Whilst these concerns are clear, a viable solution is still elusive. Part of the solution lies in knowing how anatomical...

["Agricultural Science","Developmental Biology","Evolutionary Studies","Zoology","Anatomy and Physiology"]
doi:10.7287/peerj.preprints.343v1

Genetic selection for improved meat yields, digestive efficiency and growth rates have transformed the biology of broiler chickens. Modern birds undergo a 50-fold multiplication in body mass in just six weeks, from hatching to slaughter weight. However, this selection...

["Agricultural Science","Developmental Biology","Evolutionary Studies","Zoology","Anatomy and Physiology"]
doi:10.7287/peerj.preprints.342v1

Aetiologies of developmental dyslexia often assume a deficit in auditory processing may be causally entailed in the specific learning disorder. The purpose of this study is to compare a number of assumed auditory features that are supposed to evidence the account...

["Biophysics","Developmental Biology","Neuroscience","Cognitive Disorders","Psychiatry and Psychology"]
doi:10.7287/peerj.preprints.341v1

Quantitative analysis of organismal form is an important component for almost every branch of biology. Although generally considered an easily-measurable structure, the quantification of gastropod shell form is still a challenge because shells lack homologous structures...

["Developmental Biology","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.157v2

In Drosophila, iron is stored in the endomembrane system of cells inside a protein cavity formed by 24 ferritin subunits of two types (Fer1HCH and Fer2LCH) in a 1:1 stoichiometry. Ferritin accumulates in the midgut, nervous system, hemolymph and nephrocytes of...

["Cell Biology","Developmental Biology","Genetics"]
doi:10.7287/peerj.preprints.301v1

The molluscan shell can be viewed as a petrified representation of the organism’s ontogeny and thus can be used as a record of changes in form during growth. However, little empirical data is available on the actual growth and form of shells, as these are hard...

["Developmental Biology","Evolutionary Studies","Zoology"]
doi:10.7287/peerj.preprints.289v1

The coffin fly, Megaselia scalaris, is a species of medical and forensic importance and is increasingly being used for the study of genetics. Postmortem interval can be estimated based on the life stage of M. scalaris recovered from corpses, therefore many studies...

["Developmental Biology","Entomology","Evolutionary Studies"]
doi:10.7287/peerj.preprints.205v1

Haploid embryonic stem cells (ESCs) are useful for studying mammalian genes because disruption of only one allele can cause loss-of-function phenotypes. Here, we report the use of haploid ESCs and the CRISPR RNA-guided Cas9 nuclease gene-targeting system to manipulate...

["Developmental Biology","Genetics"]
doi:10.7717/peerj.230

Induced pluripotent stem cells (iPSCs) are becoming mainstream tools to study mechanisms of development and disease. They have a broad range of applications in understanding disease processes, in vitro testing of novel therapies, and potential utility in regenerative...

["Cell Biology","Developmental Biology","Virology"]
doi:10.7717/peerj.224

Following a series of experiments in which six orangutans and one gorilla discriminated photographs of different animal species in a two-choice touch screen procedure, Vonk & MacDonald (2002) and Vonk & MacDonald (2004) concluded that orangutans, but not the gorilla,...

["Animal Behavior","Developmental Biology","Evolutionary Studies"]
doi:10.7717/peerj.158

Scientific reproducibility has been at the forefront of many news stories and there exist numerous initiatives to help address this problem. We posit that a contributor is simply a lack of specificity that is required to enable adequate research reproducibility....

["Cell Biology","Developmental Biology","Neuroscience","Immunology","Science Policy"]
doi:10.7717/peerj.148

Dorsal horn neurons in the spinal cord integrate and relay sensory information to higher brain centers. These neurons are organized in specific laminae and different transcription factors are involved in their specification. The murine homeodomain Gbx1 protein...

["Developmental Biology"]
doi:10.7717/peerj.142

Many studies have shown that adverse experience in early life is associated with accelerated reproductive timing in humans. There are two different classes of adaptive explanation for such associations. Both can be seen as predictive adaptive responses (PARs)....

["Anthropology","Developmental Biology","Evolutionary Studies","Psychiatry and Psychology"]
doi:10.7287/peerj.preprints.23v1

The evolutionary success of mammals is rooted in their high metabolic rate. A high metabolic rate is sustainable thanks to efficient food processing and that in turn is facilitated by precise occlusion of the teeth and the acquisition of rhythmic mastication. These...

["Developmental Biology","Evolutionary Studies","Paleontology","Anatomy and Physiology"]
doi:10.7717/peerj.24

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