• 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
Alan Wolffe (1959-2001) - Journal of Cell Science
Alan Wolffe (1959-2001) - Journal of Cell Science

... expression and nuclear organisation of transcription. It is impossible to mention all their contributions in these areas, but worth noting are their papers on histone phosphorylation, remodelling of sperm chromatin in Xenopus egg extracts, a recognition element within the structure of the nucleosome ...
Mathematical modeling reveals additional links between
Mathematical modeling reveals additional links between

... and the phase to SA perturbation suggest that NPR1 activates other clock genes, in addition to the evening-phased TOC1 . To systematically search for other possible clock components that are regulated by NPR1, we performed mathematical modeling using the P2012 circadian model (Pokhilko, et . al ., 2 ...
Directions
Directions

... 2pts In meiosis the chromosomes are in “sets” one chromosome from each parent (pink from mother, blue from father) 2. When you folded the pair of chromosome and dropped them, what did that represent? 2pts A diploid cell going through meiosis and ending its random journey as a haploid cell 3. What is ...
Mouse_lecture
Mouse_lecture

... ~5% of coding genes in genome Highly conserved across vertebrates Flies and worms have unrelated GPCR families of odorant receptors. Identified later from mining the sequenced genomes in mid-90s. Worm GPCRs identified by Emily Troemel in Bargmann lab at UCSF. ...
Biol 178 Lecture 24
Biol 178 Lecture 24

Part 2 - Laboratory of Aquaculture & Artemia Reference Center
Part 2 - Laboratory of Aquaculture & Artemia Reference Center

... be a potential model for classical genetic studies in the past and molecular level approaches are yet to be iniated such as functional genomics, population genomics etc. Artemia shows well developed gene regulatory system for its survival even under extreme conditions. Artemia seems to be a promisin ...
You Light Up My Life
You Light Up My Life

... an allele that specifies a heat-sensitive version of an enzyme in melaninproducing pathway Melanin is produced in cooler areas of body ...
Incomplete lineage sorting and other `rogue` data fell the tree of life
Incomplete lineage sorting and other `rogue` data fell the tree of life

... paradigm can be found in the genetic studies of human origins. Evolutionists have long maintained that modern primate species (including, in their view, humans) are branches on an evolutionary tree that lead back to a common ancestor. Of course, ILS and the problems it presents for primate evolution ...
The human lexinome: Genes of language and reading
The human lexinome: Genes of language and reading

... and as guanine (G) in 40%. Geneticists call each unique variant of a marker an ‘‘allele;’’ thus, the adenine variant of SNP x might be called ‘‘allele 1,’’ and the guanine variant might be called ‘‘allele 2.’’ The frequency that an individual SNP in a defined population has at least two alleles is c ...
one
one

... dominant allele and one recessive, disorder-causing allele, do not have the disorder, but can pass it on because they are carriers of the disorder. • Sex-linked genes: Genes on the sex-chromosomes (the X and Y chromosomes in many species) are sex-linked genes. In mammals, including humans, and some ...
Matching On the lines provided, write the letter of the definition of
Matching On the lines provided, write the letter of the definition of

... b. process of reduction division c. specific characteristic d. produced by crossing parents with different alleles e. containing a single set of chromosomes f. reproductive cell g. factor that controls traits h. diagram showing possible gene combinations i. branch of biology that studies heredity j. ...
CHAPTER 9
CHAPTER 9

... inheritance of a single character  Four Hypotheses 3. If the alleles differ, the DOMINANT allele determines the organism’s appearance, and the RECESSIVE allele has no noticeable effect – The PHENOTYPE is the appearance or expression of a trait – The same phenotype may be determined by more than one ...
Diplosporous development in Boehmeria tricuspis: Insights
Diplosporous development in Boehmeria tricuspis: Insights

... Boehmeria tricuspis includes sexually reproducing diploid and apomictic triploid individuals. Previously, we established that triploid B. tricuspis reproduces through obligate diplospory. To understand the molecular basis of apomictic development in B. tricuspis, we sequenced and compared transcript ...
Hong - Gene Ontology Consortium
Hong - Gene Ontology Consortium

... 1. Currently, all GO annotations for S. cerevisiae gene products are manually curated from literature 2. SGD will incorporate computationally predicted GO annotations that will provide additional information for a gene product’s role in biology 3. Computationally predicted GO annotations will be use ...
Current Members are pictured (clockwise starting with the top row
Current Members are pictured (clockwise starting with the top row

... FlgM that appears to sequester SigD in the cell. A similar regulatory mechanism exists in the enteric bacteria and FlgM appears to be inactivated by its specific export through the HBB. However, the B. subtilis FlgM protein has not been localized outside the cell, and it appears to function as part ...
Muller Am. Nat. 66:703 1932
Muller Am. Nat. 66:703 1932

... male fromfemale germ cells, the differentiationof male fromfemale sex organs, the separation of the sexes, with its associated mechanism of sex determination,and the differentiationof secondary sexual and "sex-limited" characters in general, but also the mechanism of Mendelian heredity itself, invol ...
Genotypes and phenotypes
Genotypes and phenotypes

... People have been aware for a long time that some conditions, such as certain colour vision defects and a blood-clotting disorder (haemophilia) that occur in particular families, appear more often in males than in females. Why? This is because the genes controlling colour vision and blood clotting ar ...
Why sex is worth losing your head for
Why sex is worth losing your head for

... bacteria – manage fine without it. That suggests that the ubiquity of sex among complex organisms has something to do with their ancient evolutionary history, not just the recent more past. Could there be some deep connection between the evolution of sex and the evolution of complex cells more than ...
Chapter 10 Notes (Overhead Version)
Chapter 10 Notes (Overhead Version)

... A. In most organisms, gamete (sex cells) can either be EGG OR SPERM B. Humans have 46 chromosomes or 23 PAIRS of chromosomes. 1. Egg cell would carry 23 chromosomes 2. Sperm cell would carry 23 chromosomes C. Genes are located on chromosomes in the cell nucleus. D. Mendel's principles of genetics re ...
No Slide Title
No Slide Title

... in several basic ways • by region (e.g. brain versus kidney) • in development (e.g. fetal versus adult tissue) • in dynamic response to environmental signals (e.g. immediate-early response genes) • in disease states • by gene activity ...
ANSWER KEY
ANSWER KEY

... 1. The donor cell forms a pilus and draws the recipient into contact and other transfer (Tra) proteins form a pore complex so that transfer can occur. 2. A relaxase, or nicking enzyme, makes a nick at the origin of transfer, oriT, on the plasmid. 3. The 5’ end of the nicked template is held by the p ...
Reviewing Genotypes and Phenotypes Genotype describes the
Reviewing Genotypes and Phenotypes Genotype describes the

... Evolution through Natural Selection acts on an organism’s phenotype (traits or characteristics) not its genotype. As a result, it influences the frequency of genotypes. For many traits, the homozygous genotype (AA, for example) has the same phenotype as the heterozygous (Aa) genotype. If both an AA ...
Breeding and Genetics - Faculty Website Listing
Breeding and Genetics - Faculty Website Listing

... • Example: If a ewe has a +.3 for no. of lambs born, then one would expect the progeny to produce .3 more lambs per lambing than the progeny of average ewes. ...
Monohybrid crosses in humans
Monohybrid crosses in humans

... part of the eyes and a blue layer at the back of the iris shows through, resulting in blue eyes. A dominant allele of this gene, P , causes pigment to be deposited in the front layer of the iris, thus masking the blue to varying degrees. Other genes determine the exact nature and density of this pig ...
Summary of lesson
Summary of lesson

... An allele is a different form of a gene located at a specific position on a specific chromosome, a DNA molecule. Alleles determine traits that can be passed on from parents to offspring. In many cases, a trait is determined by one pair of alleles—one allele from each parent. If an offspring inherits ...
< 1 ... 288 289 290 291 292 293 294 295 296 ... 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 © 2026
  • DMCA
  • Privacy
  • Terms
  • Report