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Overview of Genetics
Overview of Genetics

... body contain the same genetic information  Differentiation causes cells to differ in appearance and function. This is controlled by variation in gene expression.  Stem cells are less specialized ...
Mycorrhiza
Mycorrhiza

... putative tomato sugar transporter, was isolated from mycorrhizal roots by using a PCR-based approach. Based on sequence similarity, conserved motifs and predicted membrane topology, LeST3 was classified as a putative monosaccharide transporter of the sugar transporter subgroup of the major facilitat ...
Ammonium transport in Escherichia coli: localization and nucleotide
Ammonium transport in Escherichia coli: localization and nucleotide

... may function as a simple transcription terminator. The ORF was examined for codon usage preference according to Gribskov et al. (1984) using E. coli codon usage tables (Maruyama et al., 1986). A codon usage typical of E. coli was found. The average preference score for the ORF is 1- 14, while that o ...
simple patterns of inheritance
simple patterns of inheritance

... or crossed to each other, this is called a hybridization experiment, and the offspring are referred to as hybrids. For example, a hybridization experiment could involve a cross between a purple-flowered plant and a white-flowered plant. Mendel was particularly intrigued by the consistency with which ...
Initiation of recombination suppression and PAR formation during
Initiation of recombination suppression and PAR formation during

... the most closely related species to T. muenninki among the species with sufficient sequence data available for the analysis. Noncoding sites and third codon positions of coding sites, which are not generally subject to strong purifying selection, were used in this analysis. The mutation direction of ...
Inheritance of Organelle DNA Sequences in a Citrus–Poncirus
Inheritance of Organelle DNA Sequences in a Citrus–Poncirus

... correspondence to C. D. Chase at the address above or e-mail: [email protected].  2002 The American Genetic Association 93:174–178 ...
Inheritance of Nuclear DNA Markers in Gynogenetic Haploid Pink
Inheritance of Nuclear DNA Markers in Gynogenetic Haploid Pink

... problems are likely to be even more serious in organisms such as salmonids that, as a result of their polyploid ancestry, have more duplicated loci. PCR primers designed without detailed knowledge of differences between paralogous loci may or may not amplify sequences from both loci. Moreover, even ...
Chapter Three: Heredity and Environment
Chapter Three: Heredity and Environment

... Additive genes combine to make a phenotype.  Example: ...
GENETIC CALCULATOR (HORSE COLOUR) Help File
GENETIC CALCULATOR (HORSE COLOUR) Help File

... completely normal body (the latter being the likely source of “Crop out” individuals). As the Chestnut, Roan and Tobiano genes are all located on the same chromosome they are “ linked” genes and thus need to be looked at in the context of both a group and an individual basis. Linked genes are genera ...
AP Biology Unit 4 --Cell Reproduction--Mitosis
AP Biology Unit 4 --Cell Reproduction--Mitosis

... Classical Genetics (Mendelian Genetics) Gregor Mendel: The Father of Genetics What is genetics? In its simplest form, genetics is the study of heredity. It explains how certain characteristics are passed on from parents to children. Much of what we know about genetics was discovered by the monk Greg ...
Document
Document

Applied and Environmental Microbiology
Applied and Environmental Microbiology

... A PCR-based approach was developed to detect ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO) form I large-subunit genes (cbbL) as a functional marker of autotrophic bacteria that fix carbon dioxide via the Calvin-Benson-Bassham cycle. We constructed two different primer sets, targeting the ...
Bioinformatics Seminar 13/11/07
Bioinformatics Seminar 13/11/07

... • CLI use of GABOS caters for programmatic use of the tool as part of other tasks. – For eg. Collecting 5000 bases before a transcript and 5000 into the transcript to be used for promoter/regulation searching for thousands of genes. CLI Eg. gabos -afile refFlat.txt -genome mm9 -seqrange 4,482,560-4, ...
Chapter 3 Mendelism: The Basic Principles of Inheritance
Chapter 3 Mendelism: The Basic Principles of Inheritance

... 4093) A recessive trait is one that is: a) Masked by a dominant trait, if a dominant trait is present in the genotype b) Not masked by any other trait present in the genotype c) Masked by another recessive trait, if another recessive trait is present in the Genotype d) All of these e) None of these ...
Leukaemia Section t(1;3)(p36;q21) Atlas of Genetics and Cytogenetics in Oncology and Haematology
Leukaemia Section t(1;3)(p36;q21) Atlas of Genetics and Cytogenetics in Oncology and Haematology

... myeloproliferative disorders. The majority of MDS patients transform into AML with a short preleukemic phase. Blood data: frequent thrombocytosis or normal platelet count. ...
To Taste Or Not To Taste?
To Taste Or Not To Taste?

Homework p. 148 q. 2 - Ms. Pasic
Homework p. 148 q. 2 - Ms. Pasic

... Homework p. 149 q. 5 Multiple alleles control the coat colour of rabbits. A grey colour is produced by the dominant allele C. The Cch allele produces a silver-grey condition, called chinchilla, when present in the homozygous condition. When Cch is present with a recessive allele, a light silver-gre ...
Petunia Ap2-like Genes and Their Role in Flower and
Petunia Ap2-like Genes and Their Role in Flower and

... PhAp2A Is the Closest Ortholog of Ap2; PhAp2B and PhAp2C Belong to a Different Subfamily of Ap2-like Genes in Petunia An 800-bp PhAp2A-1 cDNA insert was used to probe petunia genomic DNA gel blots at medium stringency. Under these conditions, three hybridizing bands can be observed, one of which has ...
Bio 102 Practice Problems
Bio 102 Practice Problems

... a. Based on these results, briefly explain how color is inherited in guinea pigs and diagram the cross between the two cream animals. Be sure to define symbols. b. Is there any cross that would always yield cream-colored animals? 24. In mice, coat color is determined by a gene, B, which has black an ...
Document
Document

... Genome • Genome: Complete complement of an organism’s DNA. – Includes genes (control traits) and noncoding DNA organized in chromosomes. ...
Genomic Context and Molecular Evolution
Genomic Context and Molecular Evolution

... transposable elements and other types of repetitive sequences accumulate in regions of low recombination (Charlesworth et al. 1994). Again, Y and neo-Y chromosomes provide an extreme example of such accumulation (Bachtrog 2003). 2. The population genetics background: In order to understand the cause ...
14_DetailLectOut
14_DetailLectOut

... o Each diploid organism has a pair of homologous chromosomes and, therefore, two copies of each gene. o These homologous loci may be identical, as in the true-breeding plants of the P generation. o Alternatively, the two alleles may differ, as in the F1 hybrids. 3. If the two alleles at a locus diff ...
Chapter 2: Mendelian Inheritance
Chapter 2: Mendelian Inheritance

... 1. Mendel was unaware of the concept of DNA or genes. a. the term gene was first introduced by Wilhelm Johannsen b. genes reside on chromosomes c. the variants in the traits are due to versions of the gene called an allele 2. Mendel’s law of segregation: The two copies of a gene segregate from each ...
Chapter 2: Mendelian Inheritance
Chapter 2: Mendelian Inheritance

... a. Two true-breeding lines were selected that were different with regards to two different traits (seed shape, seed color). b. The F1 plants were allowed to self-fertilize. c. The phenotypic ratio of the F2 generation was determined. 4. Mendel’s experimental data (page 26) indicated the following: a ...
Genome engineering of mammalian haploid embryonic stem cells
Genome engineering of mammalian haploid embryonic stem cells

... cells contain only one copy of each chromosome and disruption of one allele can directly cause loss-of-function phenotypes. Recently, mouse haploid embryonic stem cells (ESCs) have been successfully generated, providing an ideal tool for genetic analyses (Elling et al., 2011; Leeb & Wutz, 2011). Ha ...
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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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