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DNA notes
DNA notes

... So, the strands are complimentary and antiparallel !! If you remember that nucleic acids are synthesized 5’ to 3’ and that they bind to each other in a complimentary and antiparallel fashion, you should be able to work out many problems in molecular biol. and this will save you confusion and lots of ...
Evolution-Part2
Evolution-Part2

... "The rate of increase in fitness of any organism at any time is equal to its genetic variance in fitness at that time."[1] Or, in more modern terminology: "The rate of increase in the mean fitness of any organism at any time ascribable to natural selection acting through changes in gene frequencies ...
Final Exam Review Packet Coleman Biology Per _____ Name
Final Exam Review Packet Coleman Biology Per _____ Name

... been used on a trial basis. It is hoped that the cells in the lungs will take in the healthy gene from the spray and produce normal mucus. This is an attempt at __________________________. Genetic engineering 16. A gene gun and a virus may both be classified as _______________ because they are mecha ...
Chapter 3
Chapter 3

... purines pair only with pyrimidines. half of the old molecule is conserved in each new molecule. thymine is always used in order to conserve uracil in the nucleotide pool. deoxyribose sugar has less oxygen than ribose sugar. all new molecules of DNA are single strands. ...
bcdcdbcaab - kehsscience.org
bcdcdbcaab - kehsscience.org

... RNA is usually double-stranded and contains the base thymine. RNA is usually single-stranded and contains the base uracil. RNA is longer than DNA and uses five bases to encode information. RNA is made in the nucleus of eukaryotic cells and stays there to carry out its functions. ...
coding and non-coding functions of the genome
coding and non-coding functions of the genome

... doing so, the union is destroyed, meaning it serves to regulate how much of each protein there is in a cell. But this is also complicated. Other, longer RNA can work differently. Ramin Shiekhattar, director of the Epigenetics Program at the University of Miami, explained that they can join to the DN ...
Evolution Terms to Know
Evolution Terms to Know

... C. It must be present in a population before natural selection can act upon the population. D. It tends to be reduced by the processes involved when diploid organisms produce gametes. E. A population that has a higher average heterozygosity has less genetic variation than one with a larger average h ...
chapter11
chapter11

... he would be RrTt and so could produce gametes with either R or r and either T or t (one allele for each gene). There are two choices for the first trait (R or r). No matter which of those go into a given sperm, there are still two choices for the second trait (T or t). ...
Mendel Notes
Mendel Notes

... allele is dominant over the other (capable of masking the recessive allele) ...
Behavioral Evolution and Altruism
Behavioral Evolution and Altruism

... •  Tame foxes also show differences in hormones, coat color patterns, and even in skull shape. ...
The Operon - dl.edi
The Operon - dl.edi

... CAP consists of two identical polypeptides (hence it is a homodimer). Toward the Cterminal, each has two regions of alpha helix with a sharp bend between them. The longer of these is called the recognition helix because it is responsible for recognizing and binding to a particular sequence of bases ...
Human Pedigree
Human Pedigree

... • If two or more forms (alleles) of the gene for a single trait exist, some forms of the gene may be dominant and others may be recessive. • In most sexually reproducing organisms, each adult has two copies of each gene. These genes are segregated from each other when gametes are formed. • The allel ...
• Recognize Mendel`s contribution to the field of genetics. • Review
• Recognize Mendel`s contribution to the field of genetics. • Review

... http://www.dnaftb.org/ dnaftb/1/concept/ ...
Genetically Modified Organisms
Genetically Modified Organisms

... which can be bred many times. ...
Ch. 15 Chromosomal Inheritance
Ch. 15 Chromosomal Inheritance

... Mendelian inheritance has its physical basis in the behavior of chromosomes  In ...
Biology Final Exam Vocabulary Review
Biology Final Exam Vocabulary Review

... 2. __________________ is the term that refers to DNA that is loosely wrapped around histone proteins during interphase. 3. The region that holds the two sister chromatids together in a condensed chromosome is called the __________________. 4. __________________ is the process that divides the cell c ...
Medicago Genomics and Bioinformatics
Medicago Genomics and Bioinformatics

... describing gene products in the domain of molecular biology. • Enabling a common understanding of model organisms and between databases. • Consisted of three structurally unlinked hierarchies (molecular function, biological process and cellular component). ...
file1 - Department of Computer Science
file1 - Department of Computer Science

... generates ATP by turning glucose into lactate via glycolysis and fermentation. Lactate is exported from the cell • Transcription and translation modeled by including transcription factors, rRNA, tRNA • Cell takes up glycerol and fatty acids in order to maintain membrane structure • Cell does not rep ...
Genetic Crosses
Genetic Crosses

... Genetic Screening 1. examining a person’s DNA ...
Find the Disease Genes
Find the Disease Genes

... 1) Understanding the basic causes of cancer - In cancer the cell has become confused! Please do not put your hand in the fire Please do put your hand in the fire ...
GM crops: Miracles or Monsters
GM crops: Miracles or Monsters

RNA and PROTEIN SYNTHESIS 12-3
RNA and PROTEIN SYNTHESIS 12-3

... Enzyme binds to places with specific DNA PROMOTERS sequences called _______________. RNA POLYMERASE PROMOTERS tell _________________ where to start. Signals at the end of the gene code cause transcription to _____ stop . http://images2.clinicaltools.com/images/gene/dna_versus_rna_reversed.jpg ...
Genetic regulation in eukaryotes 0. Introduction
Genetic regulation in eukaryotes 0. Introduction

... genes simultaneously. Epigenetic inheritance: the same genetic content can determine more than one phenotype as a result of, for example, maternal effects. Exon shuffling: gaining novel domains of proteins by acquiring a new exon from another gene located at other part of the genome during evolution ...
Quick Links
Quick Links

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Gene and Genome Evolution
Gene and Genome Evolution

... genes (genes in different species that have the same function and are derived from a common ancestor) • Two types of selection that can be detected when comparing homologous genes: • most selection is negative or purifying selection. Most genes perform the same function in closely related species, a ...
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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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