• 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
Analyses of human–chimpanzee orthologous gene
Analyses of human–chimpanzee orthologous gene

... downloaded from ENSEMBL v.37 (Birney et al., 2006). Ka/Ks ratios were obtained only for genes for which we had the highest confidence, and we excluded pairs such as pseudogenes and poorly annotated genes. (Nonetheless, not eliminating gene pairs at all for any of these datasets did not significantly ...
Information Encoding in Biological Molecules: DNA and protein
Information Encoding in Biological Molecules: DNA and protein

... • It is advisable to reduce the number of genes from the full set to some more manageable number, before clustering. The basis for this reduction is usually quite context specific, see ...
Opposing Activities of DRM and MES
Opposing Activities of DRM and MES

... et al. 1991). Thus, the MES proteins cooperate to promote development of healthy germ cells by activating germline genes and repressing somatic genes. Another feature of gene regulation in C. elegans hermaphrodite germ cells is the significant dampening of transcription from the X chromosomes. Somati ...
lectureFeb27
lectureFeb27

... • Distinguish between positive and negative transcriptional regulation ...
Unit 3 genetics part 1
Unit 3 genetics part 1

... It is much less difficult to consider each contrasting pair of traits separately than to combine these results. Thus the forked line method can be used to determine gametes Do Forked line method on the following Problems: ...
4 Conjugation in E. coli
4 Conjugation in E. coli

... leucine, proline, histidine. Hfr-strains don’t grow in the agar because it contains streptomycin, which the bacteria are sensitive to. The control dishes show that the strains are correctly defined, ie, the Hfrbacteria are streptomycin sensitive and the F–-strain is auxotroph that needs the amino ac ...
Grapes are Divine - Michigan Agriculture in the Classroom
Grapes are Divine - Michigan Agriculture in the Classroom

... Tell the students that each of them has genes that determine traits like their eye-color, hair color, height, and the ability to curl their tongues. Explain that plants, like grapes have genes too. When scientists find a trait they like, they use genetics to find out how to produce that trait. ...
BGS 118, Low number of tillers 1, lnt1
BGS 118, Low number of tillers 1, lnt1

... The tiller number is reduced to 2 to 4 per plant. These tillers are formed soon after seedling emergence; hence, no lateemerging tillers are observed. Culms are thick and stiff and leaves are dark green (7). Plants mutants at the lnt1 locus fail to produce secondary tillers (1). Occasional spike mal ...
Feb 27 lecture presentation
Feb 27 lecture presentation

Question paper - Unit F215 - Control, genomes and
Question paper - Unit F215 - Control, genomes and

... (d) Albinism is a genetic disorder in which a person lacks melanin pigment in their skin, hair and the iris of their eyes. A person with this disorder is called an albino. The genotype of an albino has two copies of a recessive allele of the gene for an enzyme involved in melanin production. (i) ...
Gene Codon Composition Determines Differentiation
Gene Codon Composition Determines Differentiation

... further that KCs substantially change their tRNA profiles upon differentiation. Aminoacyl-tRNAs from differentiated KCs but not undifferentiated KCs enhanced the translation of authentic L1 mRNA, suggesting that differentiation-associated change to tRNA profiles enhances L1 expression in differentia ...
DNA and Its Role in Heredity
DNA and Its Role in Heredity

... Concept 9.3 Mutations Are Heritable Changes in DNA ...
S-B-9-1_Rabbit Natural Selection Laboratory Activity
S-B-9-1_Rabbit Natural Selection Laboratory Activity

... 1. Complete the hypothesis and prediction sections of the lab. 2. Decide which color cereal will represent the allele for fur (F), and which color will represent the allele for no fur (f). 3. The paper bag represents the environment where the rabbits live and mate. Place all cereal pieces inside the ...
Sequential Elimination of Major-Effect Contributors Identifies
Sequential Elimination of Major-Effect Contributors Identifies

... Brem et al. 2002; Wang et al. 2003; Flint et al. 2005; Keurentjes et al. 2007). Although mapping strategies have been designed to detect minor-effect loci (Darvasi 1998; Satagopan et al. 2007), many of these strategies have had poor success rates, due to the confounding effects of major loci and epi ...
book ppt - Castle High School
book ppt - Castle High School

... Concept 9.3 Mutations Are Heritable Changes in DNA ...
Mosaic screens
Mosaic screens

... Screen for mutations on each chromosome (FRT near centromere for each chromosome arm) Mutations define 23 genes Some were known tumor suppressor genes that had been identified in humans. ...
what is galls
what is galls

... Certain phenolic compounds produced by the plant (including acetosyringone) cause the induction of agrobacterial virulence genes encoding, among other proteins, an endonuclease that excises T-DNA from the bacterial tumorinducing plasmid. The T-DNA then becomes integrated into the plant genome, and T ...
33-1-001
33-1-001

... generations is shown in Table I . F, plants of reciprocal crosses between Sasanishiki and Col. No. 15 showed vigorous growth and were fertile. BC1F1 plants backcrossed to both culti vars segregated into 3 normal : I weak types. Weakness did not appear at the seedling stage. The weak BC, F1 segregams ...
Molecular Plant-Microbe Interacttions
Molecular Plant-Microbe Interacttions

... RNA differential display on parallel RNA preparations from P. polymyxa-treated or untreated plants, changes in gene expression were investigated. From a small number of candidate sequences obtained by this approach, one mRNA segment showed a strong inoculation-dependent increase in abundance. The co ...
60 Mendel, First Geneticist
60 Mendel, First Geneticist

... the simplest assumption that would work was to have two alleles, or copies, per characteristic.) • Each pea plant receives only one allele for each characteristic from each parent and ends up with two alleles of its own. He then used these ideas to argue that the 3:1 ratio is exactly what is expect ...
Trachemys scripta elegans Red-Eared Turtle ( Fc)
Trachemys scripta elegans Red-Eared Turtle ( Fc)

... (encoded by the g and ε genes, respectively) expressed only by mammals. Because of the functional similarities and relatively high levels of sequence homology between y, g and ε genes, the y gene is thought to be the evolutionary precursor of the mammalian g and ε genes and may have diversified thro ...
DNA - An overview - World of Teaching
DNA - An overview - World of Teaching

... • Reconstituted “mixed” viruses by mixing the proteins of one strain with the RNA of the second strain, and vice versa. • When these mixed viruses were infected with tobacco leaves, the progeny was phenotypically and genotypically identical like parent from where ...
article ()
article ()

... binary co~g method extensively used by Voss [I1J; this method decomposes the nucleotide sequence mto four sequences corresponding to A, C, T or G (coding with 1 at the nucleotide ...
(MMR) genes - Biochemical Society Transactions
(MMR) genes - Biochemical Society Transactions

... in exons 3, 4, 5, 13 and 14. These were consistently present in both affected and unaffected individuals. A detailed search of the genome revealed 14 pseudogenes, many corresponding to exons 1–5 and previously described [21]. However, in addition, we identified a novel 100 kb genomic duplicon, conta ...
Supporting Information Legends Figure S1. Characterization of the
Supporting Information Legends Figure S1. Characterization of the

... of auxin-regulated gene expression by OGs are not affected in the ein2-5 mutant. (a) Levels of phosphorylated MAPKs (pMPK3 and pMPK6) after treatments with water, OGs or elf18 in Col-0 and ein2-5 seedlings were determined by immunoblot analysis using a commercial antibody generated against the human ...
< 1 ... 253 254 255 256 257 258 259 260 261 ... 1482 >

Gene



A gene is a locus (or region) of DNA that encodes a functional RNA or protein product, and is the molecular unit of heredity. The transmission of genes to an organism's offspring is the basis of the inheritance of phenotypic traits. Most biological traits are under the influence of polygenes (many different genes) as well as the gene–environment interactions. Some genetic traits are instantly visible, such as eye colour or number of limbs, and some are not, such as blood type, risk for specific diseases, or the thousands of basic biochemical processes that comprise life.Genes can acquire mutations in their sequence, leading to different variants, known as alleles, in the population. These alleles encode slightly different versions of a protein, which cause different phenotype traits. Colloquial usage of the term ""having a gene"" (e.g., ""good genes,"" ""hair colour gene"") typically refers to having a different allele of the gene. Genes evolve due to natural selection or survival of the fittest of the alleles.The concept of a gene continues to be refined as new phenomena are discovered. For example, regulatory regions of a gene can be far removed from its coding regions, and coding regions can be split into several exons. Some viruses store their genome in RNA instead of DNA and some gene products are functional non-coding RNAs. Therefore, a broad, modern working definition of a gene is any discrete locus of heritable, genomic sequence which affect an organism's traits by being expressed as a functional product or by regulation of gene expression.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report