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New technologies to assess genotype–phenotype
New technologies to assess genotype–phenotype

... possible to define at least one phenotype. A second layer of genomic annotation could then follow, in which every gene is described biologically by the phenotypes that it produces (shown conceptually in FIG. 1). A first step in producing a so-called ‘phenomic map’ has been made for Escherichia coli ...
Exons and Introns Characterization in Nucleic Acid Sequences by
Exons and Introns Characterization in Nucleic Acid Sequences by

... sequence. The final chain is a continuous sequence of coding region that can be translated into a protein. In complex organisms, the primary RNA transcript could be alternatively edited, so that the initial part of some introns can become coding sequence in response to specific biological signals. I ...
The evolution of sex chromosomes: similarities and differences
The evolution of sex chromosomes: similarities and differences

... Z chromosomes of both taxa share several markers Thus they probably had the same ancestral sex chromosome Recombination has been suppressed only in the chicken lineage (including other neognathae), and not in palaeognathous birds ...
Research Primer - Cellular Neurobiology
Research Primer - Cellular Neurobiology

Mendelian Genetics Class Notes
Mendelian Genetics Class Notes

... Lived in what is now the Czech Republic Tended the garden at his monastery, conducted experiments with pea plants Studied peas for 7 years, published results 1866; ignored until 1900 Now considered the “Father of Genetics” A trait is a characteristic that can vary from one individual to the next (e. ...
An Introduction to Analysis of Multiple Gene Expression Datasets
An Introduction to Analysis of Multiple Gene Expression Datasets

... – survival data (time-to-metastasis) for each patient • Test if the two genes interact in the same way in these datasets as they do in the Basel dataset – There is no need to analyze all genes in these datasets, because we already have a very specific question about ERBB2, uPA and survival ...
biology paper ii
biology paper ii

... The question paper consists of four parts A,B, C and D ...
Antisense RNA
Antisense RNA

... • miRNAs are genomically encoded non-coding RNAs that help regulate gene expression, particularly during development • Originate from capped & polyadenylated full length precursors (pri-miRNA) • Hairpin precursor ~70 nt (pre-miRNA) Mature miRNA ~22 nt (miRNA) ...
blood12618insidebloodcombined 2075..2083
blood12618insidebloodcombined 2075..2083

... a poorer prognosis with regard to progressionfree and overall survival (OS). In fact, the patients with .1 mutation in the 9 genes (groups 3 and 4 in Guièze et al) had a significantly poorer outcome, with a median OS of 28.2 and 27.1 months, respectively. With the limited sample size of this study, ...
From Hard Drives to Flash Drives to DNA Drives
From Hard Drives to Flash Drives to DNA Drives

... devices (obvious from their shape). One way to improve the capacity of a computer chip is to put several layers of circuits in it (making it 2D), but because DNA is 3D, it offers much more space. Memory cards are said to be reliable for up 5 years after their initial use, but DNA-encoded information ...
DNA and Cell Division
DNA and Cell Division

... The mRNA is directly involved in the protein-making process. mRNA tells the ribosome (Figure below) how to create a protein. The process of reading the mRNA code in the ribosome to make a protein is called translation (Figure below). Sets of three bases, called codons, are read in the ribosome; the ...
Sex Chromosomes and Sex
Sex Chromosomes and Sex

... V) Sex chromosome expression in germ cells. A) Inactivation of X and Y linked genes occurs during meiosis in male germ cells. 1) This is the result of pairing and condensation of the sex chromosomes into a “sex vesicle.” 2) Following meiosis, some X and Y linked genes are once again expressed. B) X ...
Summary/Reflection of Dan Freedman`s article, Science Education
Summary/Reflection of Dan Freedman`s article, Science Education

... DNA controls the cell in this manner because it contains codes for polypeptides. 1) Many polypeptides are enzymes that regulate chemical reactions, 2) and these chemical reactions influence the resulting characteristics of the cell. C. In the study of heredity, the terms gene and genotype are used t ...
CHAPTER 8 (CHOMOSOME MUTATION: CHANGES IN
CHAPTER 8 (CHOMOSOME MUTATION: CHANGES IN

... A. Chromosomal mutations are processes that result in rearranged chromosome parts, abnormal numbers of individual chromosomes, or abnormal numbers of chromosome sets. The resulting products are also known as chromosomal mutations. B. For our purposes here, we will be talking about alterations in lar ...
Polygenic Traits
Polygenic Traits

... • Mothers older than 35 have rapidly increasing risk. – 95% of non-disjunctions occur with the ovum. • Most Down syndrome babies are born to women younger than 35 because those are the ages that most women have children. • Dogma: all your oocytes are present at birth; meiosis is arrested in Prophase ...
Transcriptional Induction of Genes Encoding ER Resident Proteins
Transcriptional Induction of Genes Encoding ER Resident Proteins

... IRE1-Fig. 3. Complementation of mutant phenotypes high copy plasmid-pJC012. Constructing low copy number plasmid-pCS110. Disrupting the chromosomal copy of the gene in the parent strain-JC103-construction of CS165. Confirming IRE1 deficiency in auxotrophic strains- Fig. 4 ...
iMap Exercise ()
iMap Exercise ()

... clones offers to sequence BAC clones containing some of the chromatin genes you are studying. This is terrific, because most of your genes are repesented only as cDNA sequences and it would be useful to have genomic sequence information. Your job is to identify which BAC clones to sequence. ...
Genetics advances and learning disability
Genetics advances and learning disability

... addition of methyl groups to nucleotides in the DNA sequence. The classical instance is the large-scale methylation and packaging of the second X in women. However, specific differential methylation patterns of restricted regions of autosomal DNA are well known, and the clustering of genes that are ...
High frequency of TTTY2-like gene-related deletions in patients with
High frequency of TTTY2-like gene-related deletions in patients with

... spermatogenesis and they imply that additional genetic tests of Y chromosome deletions is necessary in couples with fertility problems", says Prof. Yapijakis. The studied cohort of 94 infertile patients was divided into three groups as following: group A (n = 28) included men with idiopathic moderat ...
Ch08_complete-Inheritance,_Genes
Ch08_complete-Inheritance,_Genes

... 1. In the genetic cross AaBbCcDdEE x AaBBCcDdEe where all the genes are unlinked, what fractions of offspring will be heterozygous for all of these genes? 2. In a plant species, two alleles control flower color, which can be yellow, blue, or white. Crosses of these plants produce the offspring provi ...
AP Biology Notes Outline Enduring Understanding
AP Biology Notes Outline Enduring Understanding

... mathematical methods and conceptual understandings to investigate the cause(s) and effect(s) of this change. (1.2) The student is able to evaluate evidence provided by data to qualitatively and quantitatively investigate the role of natural selection in evolution. (1.3) The student is able to apply ...
AP Biology Notes Outline Enduring Understanding 1.A Big Idea 1
AP Biology Notes Outline Enduring Understanding 1.A Big Idea 1

... mathematical methods and conceptual understandings to investigate the cause(s) and effect(s) of this change. (1.2) The student is able to evaluate evidence provided by data to qualitatively and quantitatively investigate the role of natural selection in evolution. (1.3) The student is able to apply ...
Genesis and the Genome: Genomics Evidence for Human
Genesis and the Genome: Genomics Evidence for Human

... that are highly homologous and readily interpreted as modified copies of an original ancestral genome. ...
A Glossary of Molecular Biology Terms More can be found at http
A Glossary of Molecular Biology Terms More can be found at http

... Cap: All eukaryotes have at the 5' end of their messages a structure called a "cap", consisting of a 7-methylguanosine in 5'-5' triphosphate linkage with the first nucleotide of the mRNA. It is added post-transcriptionally, and is not encoded in the DNA. Cap site: 1) In eukaryotes, the cap site is t ...
10. Wang T, Liang ZH, Sun SG, Cao XB, Peng H, Liu HJ, et al
10. Wang T, Liang ZH, Sun SG, Cao XB, Peng H, Liu HJ, et al

... Pathogenic mutations of FBXO7 are likely to induce dysfunction of the Fbxo7 protein and then cause abnormal ubiquitination. A disease associated missense mutation (c.1132C→G), resulting in the nonconservative amino acid substitution of glycine for arginine at position 378 (R378G) in F-box protein 7 ...
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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.
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