• 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
Gene Gorging Mutagenesis for the Geobacteraceae
Gene Gorging Mutagenesis for the Geobacteraceae

... I, of which one linear fragment is the mutant allele. 17. The multiple copies of this allele make it likely that it will replace the wild type allele on the chromosome; hence the name “gene gorging.” 18. Linearization of the mutant allele with I-Sce I forces a double crossover within the allele itse ...
XY female mice resulting from a heritable mutation in
XY female mice resulting from a heritable mutation in

... screen would therefore test between 12 and 48 random insertions per chimera. We chose to use a simple genetic screen specifically designed to detect XY phenotypically female offspring. This involved mating the chimeras to females carrying distinct X-chromosome markers. Two systems were used. In the ...
Chapter 2 Assignment: Genetics
Chapter 2 Assignment: Genetics

... 38. A promoter of a new genetically modified variety of rice stated the following in a letter to the editor: A genetically modified (GM) rice known as “golden rice” has been produced. The rice is somewhat yellow in colour due to the same pigment that gives carrots and sweet potatoes their colour. Th ...
March 02, 2010
March 02, 2010

... 2. Ultrasound- uses waves to make a video image of an unborn baby. It can help the doctor monitor the development of the baby, pinpoint the baby’s age, and detect certain birth Amniocentesis - process of drawing a sample of the amniotic fluid surrounding the unborn baby. This is used most often to d ...
Contrasting Effects of ENU Induced Embryonic Lethal Mutations of
Contrasting Effects of ENU Induced Embryonic Lethal Mutations of

... ligation of linker sequences incorporating a central noncomplementary region (“bubble”) containing the bubble primer sequence, essentially as described by Munroe et al. (1994). Libraries were PCR amplified using cDNA-specific primers and bubble primers. PCR products were resolved on agarose gels by ...
Biology Prokaryotes: The First Life on Earth
Biology Prokaryotes: The First Life on Earth

... Prokaryotes are everywhere! Prokaryotes are microscopic, but what they lack in size they make up for in numbers. There are more prokaryotes in a handful of fertile soil than the number of people who haveever lived on Earth. They thrive almost everywhere,including places too acidic, too salty, too co ...
View/Open - Queen Mary University of London
View/Open - Queen Mary University of London

... between epilepsy in pregnancy, anti-epileptic drugs exposure, and various maternal and fetal outcomes. In pregnant women, a diagnosis of epilepsy is associated with a small but significant increase in adverse pregnancy outcomes such as antepartum and postpartum haemorrhage, spontaneous miscarriage, ...
Database homology searching
Database homology searching

... Sbjct: 171 SIV 173 The query sequence?? ...
Using an Alu Insertion Polymorphism to Study Human
Using an Alu Insertion Polymorphism to Study Human

... identity testing. Many polymorphisms are located in the estimated 98% of the human genome that does not encode protein. This experiment examines a polymorphism in the human genome that is caused by the insertion of an Alu transposon, or transposable element. Alu is a member of the family of short in ...
Lab 1 Scientific Experimentation: Standard Curve Analysis
Lab 1 Scientific Experimentation: Standard Curve Analysis

... questions of nature in order to understand how things work. It is based on the idea that nature works according to regular repeating rules and that by careful, systematic observation, we can discover those rules. The ideas of science are that humans can find things out directly from experience witho ...
chapter_16
chapter_16

... Organism with one complete set of chromosomes is said to be euploid (applies to haploid and diploid organisms). Aneuploidy = variation in the number of individual chromosomes (but not the total number of sets of chromosomes). Nondisjunction during meiosis I or II (Chapter 12)  aneuploidy. ...
Horizontal Gene Transfer Horizontal gene transfer
Horizontal Gene Transfer Horizontal gene transfer

... genetic exchange in E. coli by mixed culture of two auxotrophic strains, so that plating onto minimal medium would only permit recombinants to grow. It was shown quite early on that the recombinants were all derived from one of the parental strains and that a one-way transfer of information was ther ...
CONNECTIVE TISSUE LABORATORY Center for Medical Genetics
CONNECTIVE TISSUE LABORATORY Center for Medical Genetics

File - biologywithsteiner
File - biologywithsteiner

ment. The penultimate section on the origin of usually occur de novo
ment. The penultimate section on the origin of usually occur de novo

... animals, and rodents on gametic selection, fertility, Here there is an account of finding submicroscopic and reproductive loss. The potential scale of this deletions in 70% of patients with Duchenne or problem is highlighted by the elegant technique of Becker muscular dystrophy, a discussion of germ ...
Chapter 7: Genetics Lesson 7.4: Mutations
Chapter 7: Genetics Lesson 7.4: Mutations

... Some mutations have a positive effect on the organism in which they occur. They are called beneficial mutations. They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur. They increase an organism’s cha ...
Chapter 7: Genetics Lesson 4: Mutations
Chapter 7: Genetics Lesson 4: Mutations

... Some mutations have a positive effect on the organism in which they occur. They are called beneficial mutations. They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur. They increase an organism’s cha ...
Biol 207 Final Exam
Biol 207 Final Exam

... Student ID# ...
Laboratory 7: PCR and Ligation Reaction
Laboratory 7: PCR and Ligation Reaction

... work in the range of 52º-60ºC. If students come up with a Tm much over 60, try 60-62 instead. Likewise, if they propose a temperature less than 50, try 50 instead. For each primer set, a negative control with no template can be set up with the remaining master mix provided there are enough lanes on ...
Meiosis and mitosis
Meiosis and mitosis

... • Even before the structure of DNA was elucidated it was thought that chromosomes represented large numbers of genes in a linear array ...
Pedigrees – Important Points are in BLUE
Pedigrees – Important Points are in BLUE

... Autosomal dominant disorders • Trait is common in the pedigree • Trait is found in every generation • Affected individuals transmit the trait to ~1/2 of their children (regardless of sex) ...
Standard Mutation Nomenclature in Molecular Diagnostics
Standard Mutation Nomenclature in Molecular Diagnostics

... relation to an adjacent exon is often clinically important information because it may indicate a predicted pathogenic effect of the variant. For example, there is a CFTR mutation commonly named “621⫹1G⬎T” (ie, AJ574942.1:g.240G⬎T and NM_000492.3:c.489⫹1G⬎T using the standard nomenclature). The nomen ...
The Effects of Adderall on Maternal and Fetal Health
The Effects of Adderall on Maternal and Fetal Health

Ecology
Ecology

... hybrid, homozygous, heterozygous, segregation, haploid, diploid, homologous chromosomes, gene, trait, sex-linked genes, mutation 21. In what sex do sex-linked disorders usually appear? 22. Probability- define, 3 facts 23. Be able to use a Punnett square to do a single-factor cross and determine the ...
Teaching deep time through macroevolution and
Teaching deep time through macroevolution and

... “tree” based on the similarity of characters--this is done by hand. [cladograms are visual representations of calculated relationships] 2. Students create character matrix and extract DNA/ sequence the 28s rRNA gene. [scaled up repetition, base pair differences are empirically determined] 3. Student ...
< 1 ... 75 76 77 78 79 80 81 82 83 ... 494 >

Cell-free fetal DNA

Cell-free fetal DNA (cffDNA) is fetal DNA circulating freely in the maternal blood stream. It can be sampled by venipuncture on the mother. Analysis of cffDNA provides a method of non-invasive prenatal diagnosis.cffDNA originates from the trophoblasts making up the placenta. It is estimated that 2-6% of the DNA in the maternal blood is fetal in origin. The fetal DNA is fragmented and makes its way into the maternal bloodstream via shedding of the placental microparticles into the maternal bloodstream (figure 1). Studies have shown that cffDNA can first be observed as early as 7 weeks gestation, and the amount of cffDNA increases as the pregnancy progresses. cffDNA diminishes quickly after the birth of the baby, so that it is no longer detectable in the maternal blood approximately 2 hours after birth. cffDNA is significantly smaller than the maternal DNA in the bloodstream, with fragments approximately 200bp in size. Many protocols to extract the fetal DNA from the maternal plasma use its size to distinguish it from the maternal DNA.Studies have looked at, and some even optimized, protocols for testing non-compatible RhD factors, sex determination for X-linked genetic disorders and testing for single gene disorders. Current studies are now looking at determining aneuploidies in the developing fetus. These protocols can be done earlier than the current prenatal testing methods, and have no risk of spontaneous abortion, unlike current prenatal testing methods. Non-invasive prenatal diagnosis (NIPD) has been implemented in the UK and parts of the US; it has clear benefits above the standard tests of chorionic villi sample (CVS) and amniocentesis which have procedure-related miscarriage risks of about 1 in 100 pregnancies and 1 in 200 pregnancies, respectively.As a method of prenatal diagnosis, cell-free fetal DNA techniques share the same ethical and practical issues, such as the possibility of prenatal sex discernment and sex selection.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report