![](images/graphics/blank.gif)
Adaptive divergence
-
Pomacea canaliculata is an important invasive species worldwide. However, little is known about the molecular mechanisms behind species displacement, adaptational abilities, and pesticide resistance, partly because of the lack of genomic information that is available for this species.
13p
vinarcissa
21-03-2023
2
1
Download
-
The aim of the study is to describe the beliefs of teachers in some English centers in Ho Chi Minh City regarding the selection of supplementary materials and how supplementary materials are adapted and designed; identify the most influential sources of teachers’ beliefs; examine the convergence and divergence between teachers’ beliefs and their practice.
193p
badbuddy10
21-04-2022
39
7
Download
-
Identification of genomic regions that have been targets of selection may shed light on the genetic history of livestock populations and help to identify variation controlling commercially important phenotypes. The Azeri and Kuzestani buffalos are the most common indigenous Iranian breeds which have been subjected to divergent selection and are well adapted to completely different regions. Examining the genetic structure of these populations may identify genomic regions associated with adaptation to the different environments and production goals.
9p
vilarryellison
29-10-2021
11
1
Download
-
Salmonid fishes exhibit high levels of phenotypic and ecological variation and are thus ideal model systems for studying evolutionary processes of adaptive divergence and speciation. Furthermore, salmonids are of major interest in fisheries, aquaculture, and conservation research. Improving understanding of the genetic mechanisms underlying traits in these species would significantly progress research in these fields.
17p
vilarryellison
29-10-2021
13
1
Download
-
Post-transcriptional regulation is crucial for the control of eukaryotic gene expression and might contribute to adaptive divergence. The three prime untranslated regions (3’ UTRs), that are located downstream of protein-coding sequences, play important roles in post-transcriptional regulation. These regions contain functional elements that influence the fate of mRNAs and could be exceptionally important in groups such as rapidly evolving cichlid fishes.
11p
vibeauty
23-10-2021
13
1
Download
-
Adaptive genomics may help predicting how a species will respond to future environmental changes. Genomic signatures of local adaptation in marine organisms are often driven by environmental selective agents impacting the physiology of organisms. With one of the highest salinity level, the Mediterranean Sea provides an excellent model to investigate adaptive genomic divergence underlying salinity adaptation.
13p
vibeauty
23-10-2021
5
1
Download
-
Allopolyploidy is a genomic structure wherein two or more sets of chromosomes derived from divergent parental species coexist within an organism. It is a prevalent genomic configuration in plants, as an important source of genetic variation, and also frequently confers environmental adaptability and increased crop productivity.
17p
vibeauty
23-10-2021
4
1
Download
-
Divergent genetic responses to the same environmental pressures may lead sympatric ecological speciation possible. Such speciation process possibly explains rapid sympatric speciation of island species.
15p
vitzuyu2711
29-09-2021
38
1
Download
-
Understanding the population structure and genetic bases of well-adapted cattle breeds to local environments is one of the most essential tasks to develop appropriate genetic improvement programs.
12p
visilicon2711
20-08-2021
10
1
Download
-
Antagonistic co-evolution can drive rapid adaptation in pathogens and shape genome architecture. Comparative genome analyses of several fungal pathogens revealed highly variable genomes, for many species characterized by specific repeat-rich genome compartments with exceptionally high sequence variability.
15p
vijeeni2711
30-06-2021
13
1
Download
-
Polar bears are uniquely adapted to an Arctic existence. Since their relatively recent divergence from their closest living relative, brown bears, less than 500,000 years ago, the species has evolved an array of novel traits suited to its Arctic lifestyle.
8p
vijeeni2711
30-06-2021
9
1
Download
-
Restrictions to gene flow, genetic drift, and divergent selection associated with different environments are significant drivers of genetic differentiation. The black tiger shrimp (Penaeus monodon), is widely distributed throughout the Indian and Pacific Oceans including along the western, northern and eastern coastline of Australia, where it is an important aquaculture and fishery species.
18p
vijeeni2711
30-06-2021
12
1
Download
-
Elucidating the effects of geography and selection on genetic variation is critical for understanding the relative importance of adaptation in driving differentiation and identifying the environmental factors underlying its occurrence.
21p
vilichoo2711
23-06-2021
7
1
Download
-
In evolutionary theory, divergence and speciation can arise from long periods of reproductive isolation, genetic mutation, selection and environmental adaptation. After divergence, alleles can either persist in their initial state (ancestral allele - AA), co-exist or be replaced by a mutated state (derived alleles -DA).
12p
vilichoo2711
25-06-2021
11
1
Download
-
Closely related hybridizing species are ideal systems for identifying genomic regions underlying adaptive divergence. Although gene expression plays a central role in determining ecologically-based phenotypic differences, few studies have inferred the role of gene expression for adaptive divergence in Neotropical systems.
14p
vijichea2711
28-05-2021
6
1
Download
-
Immediate early genes (IEGs) encode transcription factors which serve as first line response modules to altered conditions and mediate appropriate cell responses. The immediate early response gene EGR1 is involved in physiological adaptation of numerous different cell types.
13p
vioregon2711
22-02-2021
9
2
Download
-
Perenniality is best understood in quantitative terms, involving the relationship between production vs. turnover of meristems, biomass, or energy reserves. Previous quantitative trait locus (QTL) studies using divergent populations of the perennial rock cress Arabidopsis lyrata have shown that trade-offs in vegetative growth vs. reproduction are due to cascading effects of differences in early vegetative development, which contribute to local adaptation.
13p
vihashirama2711
21-05-2020
10
0
Download
-
Divergent phenotypes and genotypes are key signals for identifying the targets of natural selection in locally adapted populations.
11p
vihashirama2711
21-05-2020
10
0
Download
-
Auxin-induced genes regulate many aspects of plant growth and development. The Gretchen Hagen 3 (GH3) gene family, one of three major early auxin-responsive families, is ubiquitous in the plant kingdom and its members function as regulators in modulating hormonal homeostasis, and stress adaptations.
18p
viharuno2711
24-04-2020
16
1
Download
-
Twenty one genotypes were grouped into eight clusters based on D2 values for 11 characters. From the inter cluster D2 values of the eight clusters, it was found that the highest divergence occurred between cluster II and VI followed by cluster I and V, cluster IV and VIII, cluster V and VI, cluster V and VIII and cluster IV and V suggesting that the crosses involving varieties from these clusters would give wider and desirable recombination.
7p
cothumenhmong3
22-02-2020
17
0
Download
CHỦ ĐỀ BẠN MUỐN TÌM
![](images/graphics/blank.gif)