• Study Resource
  • Explore
    • 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
Document
Document

... Assignment: Excel Population-Genetic exercise #1 due 08 Sept 2015. There will be "individual differences" in formatting, but hand in 3 pages that have the info contained in the example given for lecture 3 on the course web site: http://www.indiana.edu/~curtweb/Teaching/L567.html. Graph the results f ...
Variants in the 1q21 risk region are associated with a visual
Variants in the 1q21 risk region are associated with a visual

... of copies of the minor allele is related to the phenotypic measure in a linear fashion. For autosomal and pseudo-autosomal markers, major homozygotes were coded as 0, heterozygotes as 1 and minor homozygotes as 2. For other markers on the Y chromosome, individuals possessing the major allele were co ...
QTL Mapping and Analysis for the Traits Related to Pod Dehiscence
QTL Mapping and Analysis for the Traits Related to Pod Dehiscence

... (2009) thought that qPDH1 controls the process of PD in soybean, while the morphological characteristics of soybean didn’t relate to this process. Yamada et al (2009) analyzed the PD among several soybean populations, and they found that there were differences among the PD controlling genes in diffe ...
The dog genome map and its use in mammalian comparative
The dog genome map and its use in mammalian comparative

... in situ hybridisation (FISH) and somatic cell hybridisation. The latter is usually carried out on the so-called radiation hybrid panels. This means that cells of the mapped species (the dog) were irradiated prior to the hybridization. Such a treatment causes a fragmentation of chromosomes and rescue ...
17q12 microdeletions - Unique The Rare Chromosome Disorder
17q12 microdeletions - Unique The Rare Chromosome Disorder

... A high proportion of babies, children and adults with a 17q12 microdeletion are known to have some anomaly of their kidneys or urinary tract. The problem is often found prenatally during pregnancy, when an ultrasound scan shows abnormal kidneys. In terms of the eventual impact, most children have no ...
X r Y
X r Y

... One-Trait Inheritance (cont.) • The results of genetic crosses can be predicted using a Punnett square. • In a Punnett square, the possible male and female gametes of each parent are arranged on the horizontal and vertical axes. • The squares represent every possible combination of gametes that cou ...
Fully automated pipeline for detection of sex linked genes using
Fully automated pipeline for detection of sex linked genes using

... principle, they contain all information with regard to how a sample differs from the reference sequence. SAMtools parameters have been chosen by rule of thumb after extensive testing. It must be taken into account that reporting many variants that will contain sequencing errors or misalignments can ...
Sex Determination and Sex-Linked Characteristics
Sex Determination and Sex-Linked Characteristics

... and fertilization produces diploid zygotes (Figure 4.3). The term sex refers to sexual phenotype. Most organisms have only two sexual phenotypes: male and female. The fundamental difference between males and females is gamete size: males produce small gametes; females produce relatively larger gamet ...
meiosis - Citrus College
meiosis - Citrus College

... the same inherited traits. • Each locus (position of a gene) is in the same position on homologues. • Humans have 23 pairs of homologous chromosomes. a. 22 pairs of autosomes b. 01 pair of sex chromosomes ...
SEX DETERMINATION, SEX LINKAGE, AND PEDIGREE ANALYSIS
SEX DETERMINATION, SEX LINKAGE, AND PEDIGREE ANALYSIS

... larger than the X chromosome (fig. 5.3). Since both human and Drosophila females normally have two X chromosomes, and males have an X and a Y chromosome, it seems impossible to know whether maleness is determined by the presence of a Y chromosome or the absence of a second X chromosome. One way to re ...
Editorial - Ontario Association on Developmental Disabilities
Editorial - Ontario Association on Developmental Disabilities

... abnormalities, develop autoimmune thyroiditis, or present with Alzheimer like dementia at a very early age. How the overexpressed gene products of the three chromosome 21s in Down syndrome interact with normally expressed gene products on other chromosomes is another key issue under intensive invest ...
S. latifolia sex-linked genes, p. 1 Evolutionary strata on
S. latifolia sex-linked genes, p. 1 Evolutionary strata on

... for all loci studied are listed in Supplementary Table 1. Amplification of 5' and 3' cDNA ends: in order to obtain complete coding sequences of the sex-linked genes, we did 5' and 3'-RACE reactions. Total RNA was extracted from young leaves of the male plant E2004-17-1 from sibship E2004-17, using t ...
Anaphase I
Anaphase I

... Concept 13.1: Offspring acquire genes from parents by inheriting chromosomes • In a literal sense, children do not inherit particular physical traits from their parents • It is genes that are actually inherited - it is the inheritance and expression/non-expression of these genes that will result in ...
Genetics of Hemophilia
Genetics of Hemophilia

... does not produce the clotting factor he needs because the Y chromosome does not provide information for the production of factor VIII or IX. When a female inherits a gene that causes hemophilia on one of her X chromosomes, she has a second X chromosome, and therefore one normal gene that produces cl ...
the kinship theory of genomic imprinting - Fischer Lab
the kinship theory of genomic imprinting - Fischer Lab

... have biallelic expression. A number of suggestions have been made as to why this should be the case. The principal effects of most genes may be to increase or decrease the fitness of the individual in which the gene is expressed, with minimal consequences for asymmetric kin. Even if a gene has effec ...
Leukaemia Section del(17p) in myeloïd malignancies Atlas of Genetics and Cytogenetics
Leukaemia Section del(17p) in myeloïd malignancies Atlas of Genetics and Cytogenetics

... cytogenetic anomaly consisting of a deletion of the short arm of chromosome 17), and a particular form of morphological dysgranulopoiesis, we also found in such cases a strong correlation between 17p deletion and p53 mutation; these correlations suggest that ANLL and MDS with 17p deletion constitute ...
Chapter 10
Chapter 10

... types of alleles from the female gametes can be produced. ...
Chapter 12
Chapter 12

... genetic studies. But we have learned that things are often more complex: • Over time genes accumulate differences and new alleles arise. • There may be more than two alleles for one character. ...
Conservation of Gene Order between Horse and Human X
Conservation of Gene Order between Horse and Human X

... from diverse sources and provides a basis for comparison of the results obtained through different mapping approaches. The only linkage map hitherto available for ECAX comprises 13 polymorphic microsatellites [12]. Apart from AHT28, all other markers are present also on the RH map. Comparatively, th ...
Germline Mutation in NLRP2 (NALP2) in a Familial
Germline Mutation in NLRP2 (NALP2) in a Familial

... KvDMR1, we analysed methylation levels at the TND (6q24), SNRPN (15q13) and PEG1 (7q32) DMRs. Both affected siblings (and all controls) had normal methylation levels at the TND and SNRPN DMRs but Child 2 demonstrated partial loss of methylation at the PEG1 DMR (Figure 3). ...
Article Purifying Selection Maintains Dosage
Article Purifying Selection Maintains Dosage

... (Mank and Ellegren 2009; Mank 2013). Rather, in many systems dosage compensation can operate locally throughout the chromosome to specifically restore balance at dosagesensitive genes (Mank and Ellegren 2009; Mank 2013). In eutherian mammals, dosage has been maintained at some haploinsufficient gene ...
Chapter 5
Chapter 5

... zero to reduce frequency of alleles responsible for feeblemindedness  Defined as: “One who is capable of earning his living under favorable circumstances, but is incapable from mental defect existing from birth or from an early age. . .”  Feeblemindedness thought to behave as a simple Mendelian re ...
Meiosis
Meiosis

... – Primary oocytes develop in primordial follicles – Primary oocytes begin meiosis but stall in prophase I and stay there for years – until the woman ovulates – This suspended prophase 1 can late in life lead to Down’s Syndrome in the woman’s offspring ...
BIO301 - National Open University of Nigeria
BIO301 - National Open University of Nigeria

... sizes. Developmental or mutational biases have also been observed in morphological evolution. For example, according to the phenotype-first theory of evolution, mutations can eventually cause the genetic assimilation of traits that were previously induced by the environment. Mutation bias effects ar ...
Hemophilia
Hemophilia

... The characteristic phenotype in hemophilia is the bleeding tendency. Symptoms in severe hemophilia arose later, when the boy will start walking or running. The severity of bleeding in hemophilia is correlated with the clotting factor level: severely affected individuals have <1 IU/dl (<1% of normal) ...
< 1 ... 19 20 21 22 23 24 25 26 27 ... 241 >

Skewed X-inactivation

Skewed X chromosome inactivation occurs when the inactivation of one X chromosome is favored over the other, leading to an uneven number of cells with each chromosome inactivated. It is usually defined as one allele being found on the active X chromosome in over 75% of cells, and extreme skewing is when over 90% of cells have inactivated the same X chromosome. It can be caused by primary nonrandom inactivation, either by chance due to a small cell pool or directed by genes, or caused by secondary nonrandom inactivation, which occurs by selection. Most females will have some levels of skewing. It is relatively common in adult females; around 35% of women have skewed ratio over 70:30, and 7% of women have an extreme skewed ratio of over 90:10. This is of medical significance due to the potential for the expression of disease genes present on the X chromosome that are normally not expressed due to random X inactivation. X chromosome inactivation occurs in females to provide dosage compensation between the sexes. If females kept both X chromosomes active they would have twice the number of active X genes than males, who only have one copy of the X chromosome. At approximately the time of implantation (see Implantation (human embryo), one of the two X chromosomes is randomly selected for inactivation. The cell undergoes transcriptional and epigenetic changes to ensure this inactivation is permanent. All progeny from these initial cells will maintain the inactivation of the same chromosome, resulting in a mosaic pattern of cells in females.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report