• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
The Fly Genome
The Fly Genome

... Drosophila X Chromosome 2b In division 2b of the X chromosome, a strange bulge appears in images of polytene chromosomes Insitu hybridization using cosmid clones mapped to that region show hybridization on the outside of this structure, but not in the middle Figure from http://www.helsinki.fi/~saur ...
16 Simple Patterns of Inheritance
16 Simple Patterns of Inheritance

... put forward in the 1860s by a researcher who knew nothing about chromosomes. Gregor Mendel, remembered today as the “father of genetics,” used statistical analysis of carefully designed plant breeding experiments to arrive at the concept of a gene, which is broadly defined as a unit of heredity. For ...
CHD
CHD

... the same population of more than one allele or genetic marker at the same locus with the least frequent allele or marker occurring more frequently than can be accounted for by mutation alone. ...
Genetics - Brookwood High School
Genetics - Brookwood High School

... added to an organisms DNA. B. Mutations and genetic diseases can be shown through different DNA fragments. C. A DNA fingerprint can identify a criminal, body, or missing person. D. DNA from different species can be compared to determine their relationship. ...
doc THREE finals
doc THREE finals

... chromosomes can be identified in interphase cells obtained from normal human cells. 2) In human, only the trisomy of either human chromosome 13, 18 and 21 can produce viable individuals. 3) Endomitosis has never been detected in human cells. 4) If non-disjunction of chromosomes 18 occurs during the ...
Polygenic inheritance and micro/minisatellites
Polygenic inheritance and micro/minisatellites

... While it has often been stated that the identification of the genes involved in complex polygenic traits may be extremely difficult, the principles learned in the past century about single gene–single disease inheritance may not be relevant to polygenic inheritance. A new paradigm specific to comple ...
Chapter 8 Review Sheet
Chapter 8 Review Sheet

... 8.14 List the phases of meiosis I and meiosis II, and describe the events characteristic of each phase. Recognize the phases of meiosis from diagrams or micrographs. 8.15 Describe key differences between mitosis and meiosis. Explain how the result of meiosis differs from the result of mitosis. 8.16– ...
Exercise - GEP Community Server
Exercise - GEP Community Server

... example, one can estimate the transition probabilities for the exon and intron states using the length distributions of exons and introns in the training set. a. If the training set used to train a gene predictor contains many short genes and a few long genes, would you expect the HMM to predict mor ...
Gene Conversion in Human Genetic Disease
Gene Conversion in Human Genetic Disease

... Data from a wide variety of organisms (including viruses, prokaryotes and yeast, as well as cell lines and tissues from higher eukaryotes) have clearly demonstrated that the number of instances of multiple mutation is significantly higher than would be predicted simply from the mutation frequency an ...
is involved in hair formation and spermatogenesis in mice gene
is involved in hair formation and spermatogenesis in mice gene

... hypogenitalism, with a reduced ability to reproduce. These mice also develop abnormalities in kidney, where movo1 is also expressed. Our findings reveal remarkable parallels between mice and flies in epidermal appendage formation and in germ-cell maturation. Furthermore, they uncover a phenotype sim ...
Genetic Traits
Genetic Traits

... Traits are passed down from parent to offspring through genetic material in cells called deoxyribonucleic acid (DNA). Therefore, the DNA that an individual inherits determines his or her characteristics. Within cells, molecules of DNA form structures called chromosomes. The instructions for specific ...
microRNA: microRNA
microRNA: microRNA

Associations between polymorphisms of growth hormone releasing
Associations between polymorphisms of growth hormone releasing

... from other species were described. The sequence of bovine GRF (1-44-NH2) differs from human GRF by only five residues (ESCH et al., 1983). MAYO et al. (1985) isolated and characterised the entire structure of the human gene encoding GHRH. The gene consists of five exons separated by interval introns ...
Organization and dynamics of plant interphase chromosomes
Organization and dynamics of plant interphase chromosomes

... small genomes (Schizosaccharomyces pombe and Saccharomyces cerevisiae) [18,19] show it, whereas the larger mammalian genomes do not (e.g. [20]). The Rabl configuration might be regarded as the default interphase chromosome configuration, because it maintains anaphase chromosome orientation. Rather t ...
Genotype, Phenotype, and Karyotype Correlation in the XO Mouse
Genotype, Phenotype, and Karyotype Correlation in the XO Mouse

... it excludes the possibility that the predicted XO animals are Edaþ/EdaTa, XX females with skewed X inactivation. In order to confirm that the predicted XO animals have a pure XO karyotype and not a cryptic translocation or other subtle chromosomal anomaly, whole-chromosome painting was performed on ...
Divergent Amphibian Species Nonclassical MHC Class I Lineages
Divergent Amphibian Species Nonclassical MHC Class I Lineages

... monkeys (e.g., tamarin) and nonprimate mammals do not have these human orthologues (5). In other words, different families or orders of mammals usually do not have orthologous genes. This pattern of evolution of MHC class I genes has been explained by the birth and death model of evolution (6) in wh ...
Zygotic Lethal Mutations With Maternal Effect Phenotypes in
Zygotic Lethal Mutations With Maternal Effect Phenotypes in

... of the m FRT chromosomes (see MATERIALS AND METHODS for protocols)and analyzed the phenotypes of eggs derived from the clones. The 496 mutations examined 1) based on were classified into three groups (Table their GLCs phenotypes. Group 1 corresponds to those mutations that do notlay eggs and do not ...
Two fatty acid ∆9-desaturase genes, ole1 and ole2
Two fatty acid ∆9-desaturase genes, ole1 and ole2

... alpina ∆5-desaturase, as predicted, contains three histidine boxes, although one of the essential histidine residues has been replaced with a glutamine, a change which is found in some other desaturases. This enzyme also contains a cytochrome b domain fused at the N ...
Plant LTR-retrotransposons and MITEs: control of
Plant LTR-retrotransposons and MITEs: control of

... account for more than 50– 80% of their DNA content (Kumar and Bennetzen, 1999). The copy number of retrotransposons increases with their activity due to their replicative mechanism of transposition and has probably played a major role in plant genome expansion (Bennetzen and Kellogg, 1997), but the ...
Creating a Karyotype: A Chromosome Study
Creating a Karyotype: A Chromosome Study

... An examination of the chromosomes of a cell under high magnification can give a lot of information about an organism. If the cells are from an unborn human, its sex can be determined before it is born. It can also be determined if the unborn may have certain birth defects or problems caused by impro ...
File
File

...  Genes are located on chromosomes  Chromosomes have numerous gene locations  Genes come in pairs  Both genes carry instructions for the same thing ...
Predicting the Genes Regulated by MicroRNAs via Binding Sites in
Predicting the Genes Regulated by MicroRNAs via Binding Sites in

... i.e. single-stranded regions of the secondary RNA structure (Fig. 2b). However, it is not necessary that the full ‘seed match’ (i.e. mRNA sequence complementary to the seed) be accessible at all times; four nucleotides are often sufficient to nucleate the binding (see Section 4 for more details).[14 ...
Hox gene regulation by C. elegans sop-3
Hox gene regulation by C. elegans sop-3

... previously described another gene, sop-1, identified in the same suppressor screen, which encodes a component of the transcriptional Mediator complex (Zhang and Emmons, 2000). Mutations in both sop-1 and sop-3 suppress a mutation in a cis regulatory element of the C. elegans caudal homolog, pal-1. T ...
Proteorhodopsin Phototrophy Promotes Survival of Marine
Proteorhodopsin Phototrophy Promotes Survival of Marine

... elements since transposase genes are found flanking the PR, crtEIBY, and blh genes in both BAA-1116 and AND4 (Figure 2). The transposase gene closest to the PR gene in AND4 was truncated and showed best matches to transposases in V. anguillarum 775, V. parahaemolyticus AQ3776 and V. cholerae 91, wit ...
Supplementary materials
Supplementary materials

... stop-codon positions. Second, as a supplement we did this using the CDS alignments, which considered the protein-coding information. In detail we divided each NMD stop-exon in humans into the 5’ part and 3’ part relative to the stop codon. Then we align the 5’ part with the coding region of the mou ...
< 1 ... 138 139 140 141 142 143 144 145 146 ... 779 >

Genomic imprinting

Genomic imprinting is the epigenetic phenomenon by which certain genes are expressed in a parent-of-origin-specific manner. If the allele inherited from the father is imprinted, it is thereby silenced, and only the allele from the mother is expressed. If the allele from the mother is imprinted, then only the allele from the father is expressed. Forms of genomic imprinting have been demonstrated in fungi, plants and animals. Genomic imprinting is a fairly rare phenomenon in mammals; most genes are not imprinted.In insects, imprinting affects entire chromosomes. In some insects the entire paternal genome is silenced in male offspring, and thus is involved in sex determination. The imprinting produces effects similar to the mechanisms in other insects that eliminate paternally inherited chromosomes in male offspring, including arrhenotoky.Genomic imprinting is an inheritance process independent of the classical Mendelian inheritance. It is an epigenetic process that involves DNA methylation and histone methylation without altering the genetic sequence. These epigenetic marks are established (""imprinted"") in the germline (sperm or egg cells) of the parents and are maintained through mitotic cell divisions in the somatic cells of an organism.Appropriate imprinting of certain genes is important for normal development. Human diseases involving genomic imprinting include Angelman syndrome and Prader–Willi syndrome.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report