Morphology and Adaptive Significance of Fin Knobs in Egg-Clustering Darters

Copeia ◽  
1991 ◽  
Vol 1991 (1) ◽  
pp. 80 ◽  
Author(s):  
Henry L. Bart ◽  
Lawrence M. Page
Keyword(s):  
Adaptive Significance ◽  
Egg Clustering

Adaptive significance of mass-flowering in Hedychium coccineum (Zingiberaceae)

2013 ◽  
Vol 20 (3) ◽  
pp. 376-385
Author(s):  
Gao Jiangyun ◽  
Sheng Chunling ◽  
Yang Shuxia
Keyword(s):  
Adaptive Significance ◽  
Mass Flowering

scholarly journals Horizontal Gene Transfer Involving Chloroplasts

2021 ◽  
Vol 22 (9) ◽  
pp. 4484
Author(s):  
Ewa Filip ◽  
Lidia Skuza
Keyword(s):  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Driving Force ◽  
Genetic Material ◽  
Adaptive Significance ◽  
Chloroplast Genomes ◽  
Organelle Genomes ◽  
Number Of Genes ◽  
Cellular Compartments

Horizontal gene transfer (HGT)- is defined as the acquisition of genetic material from another organism. However, recent findings indicate a possible role of HGT in the acquisition of traits with adaptive significance, suggesting that HGT is an important driving force in the evolution of eukaryotes as well as prokaryotes. It has been noted that, in eukaryotes, HGT is more prevalent than originally thought. Mitochondria and chloroplasts lost a large number of genes after their respective endosymbiotic events occurred. Even after this major content loss, organelle genomes still continue to lose their own genes. Many of these are subsequently acquired by intracellular gene transfer from the original plastid. The aim of our review was to elucidate the role of chloroplasts in the transfer of genes. This review also explores gene transfer involving mitochondrial and nuclear genomes, though recent studies indicate that chloroplast genomes are far more active in HGT as compared to these other two DNA-containing cellular compartments.

On the Adaptive Significance of Circadian Clocks for Their Owners

2013 ◽  
Vol 30 (4) ◽  
pp. 413-433 ◽  
Author(s):  
Koustubh M. Vaze ◽  
Vijay Kumar Sharma
Keyword(s):  
Adaptive Significance ◽  
Circadian Clocks

scholarly journals Heterokairy: a significant form of developmental plasticity?

2016 ◽  
Vol 12 (9) ◽  
pp. 20160509 ◽  
Author(s):  
S. D. Rundle ◽  
J. I. Spicer
Keyword(s):  
Research Agenda ◽  
Developmental Plasticity ◽  
Potential Role ◽  
Research Effort ◽  
Adaptive Significance ◽  
Research Interest ◽  
Adaptive Plasticity ◽  
Comparative Embryology ◽  
A Current

There is a current surge of research interest in the potential role of developmental plasticity in adaptation and evolution. Here we make a case that some of this research effort should explore the adaptive significance of heterokairy, a specific type of plasticity that describes environmentally driven, altered timing of development within a species. This emphasis seems warranted given the pervasive occurrence of heterochrony, altered developmental timing between species, in evolution. We briefly review studies investigating heterochrony within an adaptive context across animal taxa, including examples that explore links between heterokairy and heterochrony. We then outline how sequence heterokairy could be included within the research agenda for developmental plasticity. We suggest that the study of heterokairy may be particularly pertinent in (i) determining the importance of non-adaptive plasticity, and (ii) embedding concepts from comparative embryology such as developmental modularity and disassociation within a developmental plasticity framework.

The Adaptive Significance of Gastropod Torsion

Evolution ◽  
1966 ◽  
Vol 20 (3) ◽  
pp. 337 ◽  
Author(s):  
Michael T. Ghiselin
Keyword(s):  
Adaptive Significance
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