Morphological variation

Ebook "Hox genes: Studies from the 20th to the 21st century" was intended as a listing of the kinds of naturally occurring variation that could act as a substrate for the evolutionary process and Bateson took his examples from collections, both private and in museums, of materials displaying morphological oddities. Interestingly the person who also coined the term “Genetics” proffered little in the way of speculation on the possible genetic underpinnings of these oddities.

184p ladongphongthanh1008 22-04-2024 1 1   Download

Part 1 book "The genetics of the pig" includes content: Systematics and evolution of the pig, genetic aspects of pig domestication, molecular genetics of coat colour variation, genetics of morphological traits and inherited disorders, molecular genetics, immunogenetics, cytogenetics and chromosome maps, pig genomics, behaviour genetics of the domestic pig, biology and genetics of reproduction.

251p muasambanhan05 22-01-2024 6 2   Download

Part 1 book "Animal microbiology" includes content: Morphology and structure of bacteria; physiology and ecology of bacteria; disinfection and sterilization; infection and pathogenesis of bacteria; bacterial heredity and variation; classification and nomenclature of bacteria; coccus of gram positive; enterobacteriaceae; pasteurellaceae; gram negative aerobe; gram positive asporogenous rod; gram positive, spore forming bacilli; mycobacterium; spirochaeta, mycoplasma, rickettsia and chlamydia... and other contents.

249p muasambanhan04 14-01-2024 3 2   Download

Part 1 book "Veterinary hematology - Atlas of common domestic and non domestic species" includes content: Hematopoiesis, normal red blood cell morphology, variations in red blood cell morphology, red blood cell inclusions and parasites, normal white blood cell morphology, variations in white blood cell morphology, white blood cell inclusions and parasites.

68p oursky07 24-10-2023 4 2   Download

Part 1 book "The genetics of cattle" includes content: Systematics and phylogeny of cattle, genetic aspects of domestication, breeds of cattle, molecular genetics of coat colour variation, genetics of morphological traits and inherited disorders, cytogenetics and chromosome maps, bovine genomics, bovine immunogenetics, genetics of disease resistance,... and other contents.

328p oursky05 20-09-2023 6 2   Download

The use of DNA barcodes is a molecular method commonly used for the identification of specimens that are difficult to pinpoint accurately by traditional morphological methods. DNA barcoding uses standard short genomic regions that are universally present in target lineages and has sufficient sequence variation to identify species in the genus.

9p vicaptainmarvel 21-04-2023 4 2   Download

Different forest vegetations provide herbivorous small mammals with different resources, forcing adaptation since food habits depend on available resources. We expect differences in vegetation to be reflected in the size and shape of the skull and mandible as a result of potentially different feeding resources.

19p vicaptainmarvel 21-04-2023 10 2   Download

Tuber appearance is highly variable in the Andean cultivated potato germplasm. The diploid backcross mapping population ‘DMDD’ derived from the recently sequenced genome ‘DM’ represents a sample of the allelic variation for tuber shape and eye depth present in the Andean landraces. Here we evaluate the utility of morphological descriptors for tuber shape for identification of genetic loci responsible for the shape and eye depth variation.

10p vinarcissa 21-03-2023 3 1   Download

Global trade has ensured that the ornamental horticulture continues to grow worldwide, with rose hybrids being the most economically important genus (Rosa x hybrida). Due to changes in global trade and an increase in energy costs the ornamental industry has seen a shift in the production and sale of flowers from the US and Europe alone to production in Africa and Latin America.

14p vinarcissa 21-03-2023 8 1   Download

To optimize marker-assisted selection programs, knowledge of the genetic architecture of phenotypic traits is very important for breeders. Generally, most phenotypes, e.g. morphological and physiological traits, are quantitatively inherited, and thus detection of the genes underlying variation for these traits is difficult.

8p vinarcissa 21-03-2023 5 1   Download

Modern breeding and artificial selection play critical roles in pig domestication and shape the genetic variation of different breeds. China has many indigenous pig breeds with various characteristics in morphology and production performance that differ from those of foreign commercial pig breeds.

9p vinarcissa 21-03-2023 5 1   Download

Human intestinal schistosomiasis caused by Schistosoma mansoni and urinary schistosomiasis caused by Schistosoma haematobium are endemic in Ethiopia. Although schistosomes look morphologically uniform, there is variation in infectivity, egg productivity and virulence due to variation in their genetic make.

12p vinarcissa 21-03-2023 4 1   Download

In the present study, trichomes of 70 spp. from nine genera and pollens of 53 spp. from six genera were investigated using scanning electron microscopy (SEM) in order to draw the taxonomic conclusion of tribe Stachydeae. Trichome characters that can provide adequate variation in delimitation of taxa were: presence or absence of glandular or nonglandular trichomes, number of cells (uni-/bi-/multicellular), presence of extremely long trichomes (i.e.

27p lyhuyenthu 31-01-2023 4 2   Download

The study reports cultivation, characterization, and seed production of 66 wild V. hispanica genotypes, collected throughout Turkey that represent the available genetic pool. The study was carried out in an unheated greenhouse in Antalya, under Mediterranean climate from December to early June. The populations were evaluated for 21 morphological and 6 agronomic traits.

16p lyhuyenthu 31-01-2023 8 2   Download

This present study carried out sample collections along the coast of Southern Viet Nam, including the coast sites, offshore islands, and Spratly (Truong Sa) islands. External morphological and anatomical characteristics of two dominant species, Halimeda macroloba and H. opuntia, were caparisoned. The genetic marker tufA was applied to find the haplotype diversity and network among Vietnamese and worldwide populations.

12p vipagani 24-10-2022 5 2   Download

"Evaluation of morphological traits and fruit quality of Vietnamese pumpkin collection" with fiy Vietnamese pumpkin accessions were evaluated for agro-morphological characteristics and fruit quality. The experiment was continuously designed without replication. There was a remarkable variation in expression of leaf and fruit traits such as leaf size, fruit shape, fruit esh quality.

6p tieuduongchi 24-10-2022 9 3   Download

The inner integument is recorded two types. The data proved useful in the construction of a bracketed key to the species. The potential taxonomic value of the recorded characters is indicated by the richness of variation recorded in the limited sample of genera and species.

10p schindler 30-12-2021 10 0   Download

: Pumpkinseed (Lepomis gibbosus) is an exotic fish species widely distributed in Europe and it has expanded its distribution area in Turkey since its first report in 1982. It is well known that invasive species like L. gibbosus adapt to introduced habitats relatively well. In order to evaluate morphological variation within this invasive species, sampling was carried out in June 2012 and May 2013 in the Aegean and Thrace regions, respectively. Body-form variability in sampled populations of L. gibbosus was investigated using landmarkbased geometric morphometrics.

9p dolomite36 30-12-2021 7 0   Download

The total number of hemocytes and their morphological characteristics were analyzed in Helix pomatia Linnaeus, 1758, by light microscopy during different phases of hibernation. Three types of hemocytes were identified: hyalinocytes, agranulocytes, and granulocytes. Total number of hemocytes decreased significantly during hibernation. Most intensive changes in cell size, morphology, and appearance of special structures in granulocytes happened during the hibernation period itself.

7p dolomite36 30-12-2021 11 0   Download

Methods for morphological identification of water frogs from the Pelophylax esculentus complex have changed over the decades. Still, without resort to genetic analyses, water frogs remain among the most difficult European amphibians to distinguish due to their hybrid nature. The aim of this study was to identify a reliable set of quantitative and qualitative morphological characters that objectively resolve species’ identification in the Pelophylax esculentus complex and provide a rapid and robust procedure for taxon identification.

9p dolomite36 30-12-2021 9 1   Download