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genetics science learning center – internet lesson
genetics science learning center – internet lesson

... 7. What happens if a gene is mutated? ...
11-3- Exploring Mendelian Genetics
11-3- Exploring Mendelian Genetics

... individual units known as _____________. In organisms that reproduce sexually, genes are passed from parents to their ____________________. 2. In cases in which 2 or more forms (or _____________) of the gene for a single ___________exist, some forms of the gene may be dominant and others ___________ ...
DKN_5-8 TYPE
DKN_5-8 TYPE

... (σ).    Different  sigma  factors  help  RNA  polymerase  recognize  DNA  binding  sites   (control  transcripGon  of  a  unique  set  of  genes,  along  with  other  transcripGon   factors).    Only  1  strand  (template  strand)  DNA   ...
HomeworkCh7
HomeworkCh7

... b. What is the role of transcription factors in Archaea and Eukarya? Hint. Same as sigma factors in bacteria. c. What is a promotor? d. What are the three main phases of RNA synthesis? e. Can more than one copy of the gene be copied at the same time? 6. Translation a. What is translation? Why do you ...
BioSc 231 2001 Exam5
BioSc 231 2001 Exam5

... _____Which of the following statements is true regarding tryptophan biosynthesis? A. It is controlled by attenuation and not repression B. Translation controls transcription C. A high tRNATrp concentration stalls translation at the ribosome D. Tryptophan synthesis is regulated differently in eukaryo ...
Genetics BOE approved April 15, 2010 Learner Objective: Cells go
Genetics BOE approved April 15, 2010 Learner Objective: Cells go

... Learner Objective: Cells go through a natural progression of events to produce new cells. A. Cellular organelles work together to perform a specific function. B. The cell cycle regulates cells during development, growth, and repair. C. Errors in the cell cycle can lead to cancer. D. All cells in the ...
Control of Gene Expression
Control of Gene Expression

... • DNA methylation can cause long-term inactivation of genes in cellular differentiation • In genomic imprinting, methylation regulates expression of either the maternal or paternal alleles of certain genes at the start of development • Although the chromatin modifications just discussed do not alter ...
How DNA Controls the Workings of the Cell
How DNA Controls the Workings of the Cell

... humans and cows, this sequence is part of a set of instructions for controlling a bodily function. In this case, the sequence contains the gene to make the protein insulin. Insulin is necessary for the uptake of sugar from the blood. Without insulin, a person cannot use digest sugars the same way ot ...
Complementary base pairing Hydrogen bonding between purines
Complementary base pairing Hydrogen bonding between purines

... An enzyme that unwinds and unzips the double stranded DNA by breaking the weak hydrogen bonds between the paired bases An enzyme that positions and joins new complementary DNA nucleotides into place during DNA replication A molecular complex of three subunits; phosphate, a pentose sugar and a n ...
Chapter 10 Lesson 1
Chapter 10 Lesson 1

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Nucleic Acids 101 Last week`s grand challenge

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Fast Facts about Human Genetics • DNA stands for Deoxy

... On February 28, 1953, Francis Crick and James Watson figured out the structure of deoxyribonucleic acid (DNA). That structure, a 'double helix', can "unzip" (separate into two long strands) to make copies of itself. This discovery confirmed suspicions that DNA carried an organism's hereditary inform ...
The genotype is the plan / blueprint for creating an organism
The genotype is the plan / blueprint for creating an organism

... transcription unit. The coding region is the genetic information in the DNA that tells the specific structure (primary amino acid sequence) of the protein to be made. The aquaporin protein has a specific structure due to the primary amino acid sequence and the specific structure of a protein gives e ...
Chapter 1 : Genetics 101
Chapter 1 : Genetics 101

... Instructions needed to direct activities are contained within a DNA (deoxyribonucleic acid) sequence. DNA from all organisms is made up of the same chemical units (bases) called adenine, thymine, guanine, and cytosine, abbreviated as A, T, G, and C. In complementary DNA strands, A matches with T, an ...
Human Genetics
Human Genetics

... •Each parent provides a sex cell in order for fertilization to occur •The father will provide a sperm cell that has 23 ...
Bioinformatics and the Language of DNA A. Tozeren
Bioinformatics and the Language of DNA A. Tozeren

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Webquest
Webquest

... They will show you visually some of what is going on and help you to understand exactly what it happening. You will have to answer some questions based on what you see. 1. First go to the page: http://learn.genetics.utah.edu/content/begin/tour/ . Use the tabs at the top of the page and answer the fo ...
Genetic Technology
Genetic Technology

... DNA fingerprinting is a kind of genetic analysis. It is famous for solving crimes. At a crime scene, police collect genetic material. Often this is blood or other bodily fluids. In a laboratory, the material is analyzed. Computers compare the DNA fingerprint against those of suspects. A match leads ...
Reverse Engineering of Metazoan Gene Regulatory
Reverse Engineering of Metazoan Gene Regulatory

... Gene regulatory networks play a vital role in metazoan development and function. The protein-DNA interactions (PDIs) that form the basis of these networks have however been poorly characterized. The recent availability of the human genome sequence, as well as genomic resources for other organisms, h ...
Regulating Protein Synthesis
Regulating Protein Synthesis

... generally under positive control (proteins promote, rather than inhibit, RNA polymerase binding to DNA template). ...
Transcription
Transcription

... – additions or losses of nucleotide pairs in a gene; alters the ‘reading frame’ of ...
Lab Quiz 4 Key
Lab Quiz 4 Key

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Teachers Introductory notes for Genetic Modification (GM)
Teachers Introductory notes for Genetic Modification (GM)

... benefit. Traditional breeding, however, does not involve introducing genes from one species to another (GM does). However, GM allows introduction only of the gene of interest, while traditional breeding incidentally selects for neighbouring genes along with desired ones. GM animals with human genes ...
Sex Cells and Inheritance
Sex Cells and Inheritance

... Genotypes and Symbols Each allele is represented by a letter -capital letter if the allele is dominant (A) -lower case letter if the allele is recessive (a) Each organism will have two letters -1 represents the allele it receives from its ...
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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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