Genetic variation and adaptation in the asexually reproducing alga Enteromorpha linza

Cover of: Genetic variation and adaptation in the asexually reproducing alga Enteromorpha linza |

Published .

Written in English

Read online


  • Green algae.,
  • Plants -- Variation.,
  • Algae -- Long Island Sound (N.Y. and Conn.)

Edition Notes

Book details

Statementby David James Innes.
The Physical Object
Paginationxv, 203 leaves
Number of Pages203
ID Numbers
Open LibraryOL15076749M

Download Genetic variation and adaptation in the asexually reproducing alga Enteromorpha linza

Thirteen asexually reproducing clones of Enteromorpha linza were found in samples collected from March to September in Long Island Sound, USA, based on variation at five enzyme loci.

Significant differences in the relative frequency of each clone were observed among samples from 16 localities. Thirteen asexually reproducing clones of Enteromorpha linza were found in samples collected from March to September in Long Island Sound, USA, based on variation at five enzyme loci.

Significant differences in the relative frequency of each clone were observed among samples from 16 localities. There was a tendency for localities at the eastern end of the Sound to form a group Cited by:   Results. Allelic richness was comparable between the sexual species but it was higher than in the asexual species.

All species showed high heterozygote deficiency and a large variation was observed among F IS values across loci and populations. Large genetic differentiation was observed between populations confirming the poor dispersal ability of these by: Abstract. Ulva pertusa is a native species to Asia along the western coast of Pacific Ocean, with new occurrence records in the eastern coast of Pacific, Genetic variation and adaptation in the asexually reproducing alga Enteromorpha linza book northwest coast of Atlantic and the Mediterranean Sea.

However, little is known about its population genetic structure. In this study, twelve U. pertusa populations from 3 coastal areas of China: Qingdao, Yantai and Dalian, were applied Cited by: Ulva (Enteromorpha) prolifera, widely distributed from the intertidal to the upper subtidal zones around the world, was the dominant species of the massive green tides in the Yellow Sea in the.

Native Range: Unclear. Ulva prolifera is typically a marine species, known in North America from the coasts, inland salt springs, and western salt lakes (Catling and McKayMills et al. It is present in various waters, generally brackish or salty, in Asia, Europe, and Central America (Doroftei et al.Gazale and Morucci, GrintalHadi et al.Han et al.

A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Increasing Genetic Variation. Weismann was the first to state that sex causes genetic variation which increases the rate of evolution of populations (Weismann ).

Although that sex evolved to cause variation may well be correct, but there are two holes with it (Otto ). In the case of a single gene subject to selection, inCited by: 1. genetic information called DNA to the offspring. Different types of algae all have different adaptations depending on the environment they live it.

Whether having different body structures, chemistry, or reproduction strategies, each kind of algae will use their adaptations to increase their chances of Size: KB.

The booklouse genus, Liposcelis Motschulsky (Psocodea: Liposcelididae), contains species imately 10% of the Liposcelis species have a close affiliation with human habitation wingless, tiny insects (~1 mm body size) occur widely in grain storage facilities, grain processing facilities, and human dwellings where they infest various types of stored products 3, by: 8.

The booklouse, Liposcelis bostrychophila, is a worldwide pest of stored products. For decades, only thelytokous parthenogenetic reproduction was documented in L. bostrychophila. Male L Cited by: 8. In the present study, Enteromorpha linza L.

essential oil (EEO) was evaluated for antibacterial activity against Escherichia coli and Salmonella Typhimurium along with the mode of their antibacterial action. Results. The chemical composition of EEO revealed high amounts of acids ( %) and alkenes ( %).Cited by:   Despite the two-fold cost of sex, most of the higher animals reproduce sexually.

The advantage of sex has been suggested to be its ability, through recombination, to generate greater genetic diversity than asexuality, thus enhancing adaptation in a changing environment. We studied the genetic diversity and the population structure of three closely related species of bag worm moths: two Cited by: Study 76 Unit 2 Part 1 Dickson Study Guide flashcards from Shaelynn W.

on StudyBlue. Unit 2 Part 1 Dickson Study Guide - Psychology Development In Infancy And Childhood with Dickson at Rutgers University - New Brunswick/Piscataway - StudyBlue. proportion of the genetic variation among populations. Little genetic differentiation is evident when the F (ST) value falls between 0 andmoderate genetic differentiation is indicated by values between andwhile values between and indicate great genetic differentiation and values > very great genetic.

APES chapter 5 Things to Know study guide by vanessa includes 99 questions covering vocabulary, terms and more. Quizlet flashcards, activities and games help you improve your grades.

Enteromorpha (Ulva) compressa (Linnaeus) Greville tubular MACRO PLANT. Surface microscope views of Enteromorpha (Ulva) compressa stained blue 1. torn edge of a blade of a compressed/ruffled form showing the 2 separate but closely adhering layers of cells of moderate size (μm in diameter) with single pyrenoids (slide ) 2.


LASKER Department of Biological Sciences, State University of New York at Buffalo, Buffalo, NY,U.S.A. (Received 1 November ; revision received 25 March Cited by: Genetic basis of adaptation and speciation Marina Panova Faculty of Science Research Day Adaptation and speciation: genes Variation in corolla Staminodes ”Petal and stamen” AP3-gene in Arabidopsis Three genes, • Ecological studies of model genetic organisms and developing molecular tools for ecologically interesting systems.

Start studying CH. Biology (Quiz Questions). Learn vocabulary, terms, and more with flashcards, games, and other study tools. The Jones group studies how variation in genome function in natural populations facilitates adaptation to different environments and the evolution of new species.

We combine diverse functional genomic and population genomic techniques to study adaptive divergence in epigenomics and gene regulation, recombination, and adaptation from standing.

Enteromorpha intestinalis and E. compressa represent two distinct, genetically divergent species. Reinterpretation of published studies shows that these species are reproductively isolated.

However, E. compressa and E. intestinalis are sometimes very difficult to distinguish from each other and could be regarded as cryptic species. Genetic variation among species, races, forms and inbred lines of lac insects belonging to the genus Kerria(Homoptera, Tachardiidae) Sanjeev Kumar Ranjan1, Chandana Basu Mallick1, Dipnarayan Saha2, Ambarish S Vidyarthi3 and Ranganathan Ramani1 1Lac Production Division, Indian Institute of Natural Resins and Gums, Indian Council of Agricultural Research, Ranchi, India.

Genetic variation, haplotype diversity and CA’s in COI In preliminary diagnoses, specimens of T. benedii, T. amplivasatus, T. pseudogaster and T.

insularis all showed morphological conformity with the original descriptions of these taxa, but COI soon suggested that each of Cited by: The study of plant evolution and development in a phylogenetic context has accelerated research advances in both areas over the last decade.

The addition of a robust phylogeny for virtually all plant taxa based on DNA as well as morphology has given a strong context for this research. ABSTRACT. The lac insects (Homoptera: Tachardiidae), belonging to the genus Kerria, are commercially exploited for the production of lacca is the most commonly used species in India.

RAPD markers were used for assessing genetic variation in forty-eight lines of Kerria, especially among geographic races, infrasubspecific forms, cultivated lines, inbred lines, etc., of K.

lacca. Morphological variation within the dasytrichus group.—A size-free canonical variate analysis of all samples of the dasytrichus group, including the dark sympatric population, revealed a major trend of differentiation along axis 1, which summarized % of the total size-adjusted by:   Since biological species concept is dependent upon reproductive isolation of sexually reproducing species, it cannot necessarily be applied to a species that reproduces asexually.

The lineage species concept does not have that restraint and therefore can be used to explain simpler species that do not need a partner to : Heather Scoville. Abstract: Interactions between gene flow, spatially variable selection, and genetic drift have long been a central focus of evolutionary research.

In contrast, only recently has the potential importance of interactions between these factors for coevolutionary dynamics and the emergence of parasite local adaptation been realized.

Here we study host‐parasite coevolution in a metapopulation Cited by: Biology, Ecology, and Evolution of Gall-Inducing Arthropods (2 Vols.) - CRC Press Book This monograph, a set of 2 volumes places greater emphasis on the biology, behavior, and evolution of the gall-inducing arthropod and of associated organisms; the.

the relative importance of genetic and environmental factors in governing gender variation in monoecious populations. Here we were interested in determining if there was evidence for a significant genetic component to variation in sex allocation because of its importance for models of the evolution of dioecy from monoecy, a.

Population-genomic insights into the evolutionary origin and fate of obligately asexual Daphnia pulex Abraham E. Tucker, Matthew S. Ackerman, Brian D. Eads, Sen Xu, and Michael Lynch1 Department of Biology, Indiana University, Bloomington, IN mental variation is important in understanding the balance between local adaptation and dispersal and its effect on hybrid zone structure.

Here, we present a detailed genetic analysis of a hybrid zone on Palomar Mountain between the geographically terminal forms of theEnsatina complex. Our goal is toCited by: The genetic distance of green mussel from brown mussel, estimated from allozyme data was and with parrot mussel it was The genetic distance between parrot mussel and brown mussel was negligibly low ().

Using allozyme and RAPD data, the Nei’s Unbiased Measures of genetic distance were calculated and the dendograms prepared. distantly connected stages, because genetic variation, envi-ronmental interactions and additional stochastic sources of variation also contribute to late-stage phenotypes, and studies to date tend to demonstrated weaker relationships in distantly connected stages (Heath, Fox & Heath ; Lindholm, Hunt & Brooks ; Wilson & Reale ).

Cliffs worldwide are known to be reservoirs of relict biodiversity. Despite the presence of harsh abiotic conditions, large endemic floras live in such environments. Primula palinuri Petagna is a rare endemic plant species, surviving on cliff sites along a few kilometres of the Tyrrhenian coast in southern Italy.

This species is declared at risk of extinction due to human impact on the coastal Cited by: itself is the morphological variation found within members of the same species of Hystrichophora.

Males from the same population tend to have valvae which vary dramatically in shape between individuals. This case of extreme intraspecific genitalic variation appears to be informative with respect to hypotheses of evolutionary process. that the species is the fundamental taxon, and many have argued that these fields could be undermined if, say, genera, or subspecies, had the same logical status as species.

Species concepts originate in taxonomy, where the species is ‘‘the basic rank of classification’’ according to the International Commission of Zoological Nomen.

Animal reproductive system - Animal reproductive system - Annelids and mollusks: Annelids have a well-developed body cavity (coelom), a part of the lining of which gives rise to gonads. In some annelids, gonads occur in several successive body segments. This is true, for example, in polychaetes, most of which are dioecious.

Testes and ovaries usually develop, though not invariably, in many. This book includes 26 chapters on the biology, behaviour and evolution of all known groups of gall-inducing arthropods. In addition to biological and ecological information on these gall-inducing arthropods, each chapter also provides information on evolutionary aspects in relation to the evolution of their host plants.

The book also includes chapters that discuss some of the unusual ecological Cited by: 1. Citing this page: Tree of Life Web Project.

Lygaeoidea. Stilt bugs, seed bugs, etc. Version 21 June (temporary). Bivalve molluscs have flourished in marine environments, and many species constitute important aquatic resources.

Recently, whole genome sequences from two bivalves, the pearl oyster, Pinctada fucata, and the Pacific oyster, Crassostrea gigas, have been decoded, making it possible to compare genomic sequences among molluscs, and to explore general and lineage-specific genetic Cited by: because the genetic material may be directly compared independently of environmental influences (Kumar et al., ).

The inter-simple sequence repeats (ISSRs) are considered useful markers in different areas, such as phylogenetics, genetic identity and diversity, gene tagging, genome mapping, and evolutionary biology (Zietkiewicz.

1714 views Tuesday, December 1, 2020