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1 Evolution of Genome Size 1. The C
1 Evolution of Genome Size 1. The C

... c) Microsatellites (SRS “short repetitive sequences”, STR “short tandem repeats”, SSR “simple sequence repeats”) – very short sequences of 1-5 bp repeated 10-100 times. Found dispersed throughout chromosomes, often in and around genes. For example, the dinucleotide repeat CA is very common in the hu ...
ch 2
ch 2

... DNA contains genes and intergenic material Genes are functional units or sections of DNA – 20,00025,000 in one set of chromosomes (only accounts for 3% of the DNA material) Genes are in matched pairs & provide a blueprint for the production of proteins (building blocks of body) This production occur ...
PS401- Lec. 3
PS401- Lec. 3

... So, we can determine the relative distance between genes by counting the number of recombinant genotypes for each pair of genes. – Lots of recombinants = far apart ...
Principles of Biology Lake Tahoe Community College
Principles of Biology Lake Tahoe Community College

... A. near each other on same chromosome, tend to be inherited together 1. Linked genes – chromosomal basis a. X linked b. Y linked 2. X inactivation in female mammals a. one chromosome in each cell of females becomes inactivated b. males and females both have one active X in their bodies c. inactive X ...
Mutation and DNA Repair
Mutation and DNA Repair

... the “p” is the connecting phosphate) gets methylated: a CH3 group is attached to the 5 position on the ring. When 5-methyl cytosine is spontaneously deaminated, it is converted to thymine, a standard DNA base. Replication leads to a base change: one daughter stays a C-G base pair while the other is ...
The E. coli genome. - life.illinois.edu.
The E. coli genome. - life.illinois.edu.

... Buchnera genome is largely colinear with E. coli, but has lost about 4000 genes! ...
ISVEE/181 Molecular characterization of indigenous peste des petits
ISVEE/181 Molecular characterization of indigenous peste des petits

... goats, endemic in India. The study was undertaken to characterize the local PPRV by the detection of antigen by IcELISA and sequencing of fusion (F) protein and nucleoprotein (N) gene segments and phylogenetic analysis, so as to focus on genetic variation in the field viruses. A total of 64 clinical ...
The On’s and Off’s of Gene Expression
The On’s and Off’s of Gene Expression

... • Expression of the lac genes is regulated. – The genes are expressed only if lactose is in the growth medium. – The genes are not expressed if glucose is ...
Chapter 5 – Heredity
Chapter 5 – Heredity

... 6. Phenotype—the way an organism ____________________ as a result of its genotype ...
Patterns of Inheritance
Patterns of Inheritance

... 14. What is the relationship between a gene and an allele; between genes and chromosomes; between genes and DNA? 15. Define probability. Try some: What is the probability of drawing a 10 in a deck of cards? Of drawing the 10 of hearts in a deck of cards? Of drawing a 10 and a 2 in a deck of cards? ...
Name: Date: Period: Part I. The Lac Operon. Follow this link: http:
Name: Date: Period: Part I. The Lac Operon. Follow this link: http:

... Now try the lactose transport tab and insert all of the promoters and genes. Add some lactose and watch to see what transpires. What is the role of the lacY gene? How does this help the system? ...
What is Bioinformatics I?
What is Bioinformatics I?

... Multiple sequence alignment, including ClustalW. (0.5 week) ...
pptx - Central Web Server 2
pptx - Central Web Server 2

... Paralogs: “deepest” bifurcation in molecular tree reflects gene duplication. The study of paralogs and their distribution in genomes provides clues on the way genomes evolved. Gen and genome duplication have emerged as the most important pathway to molecular innovation, including the evolution of de ...
Evolution of Populations
Evolution of Populations

... Natural Selection- In nature, unequal ability to survive and reproduce Artificial Selection- Mankind “selects” for desired traits ...
Section 3 Exam
Section 3 Exam

... Bio 1010 Introduction to Biology I Spring 2012 Section Three Exam (Watch for negative words like “not.”) 1. The genome of an organism is all of its: A. Genetic material (DNA) B. Visible characteristics C. Expressed proteins D. Cells 2. In Eukaryotes, condensed, discreet packages of DNA and associate ...
Variation Hereditary Information
Variation Hereditary Information

... Aren’t all mutations deleterious? ...
Dihybrid crosses and gene linkage
Dihybrid crosses and gene linkage

... A new shuffling of the alleles has created a new combination which does not match either of the parents’ genotypes The term recombinant is used to describe both the new chromosome and the resulting organism. Recombinants form through the process of crossing over ...
Why Pea Plants? - New Century Academy
Why Pea Plants? - New Century Academy

... Multiplication Rule: States multiplication is used to determine the probability of two or more independent events will occur at the same time Addition Rule: States addition is used to determine the probability of one of two or more events occuring. ...
Sex-Influenced Genes - NCEA Level 2 Biology
Sex-Influenced Genes - NCEA Level 2 Biology

... These genes are influenced by the presence of sex hormones.  E.g. a bull may carry genes for high milk production, but he will not give milk. He would be a good sire for a dairy herd. ...
Next Generation Genomic Sequence Identification of the 19q
Next Generation Genomic Sequence Identification of the 19q

... Studying families who are genetically predisposed to cancer is a powerful approach for identifying cancer genes. We have localized a familial predisposition gene for one cancer, Wilms tumor (WT), a childhood cancer of the kidney, to chromosome 19. This result implies that every affected person withi ...
VIDEO SUMMARIES: GENETIC VARIATION
VIDEO SUMMARIES: GENETIC VARIATION

... •  Natural%selec4on%is%the%process%whereby%organisms%that%are%be:er%suited%to% the%environment%tend%to%survive%and%produce%offspring% •  Purpose:%to%help%the%survival%of%the%popula4on% •  Chatham%Island%(NZ)%Black%Robin% •  All%from%5%one%female% •  Now%250+% •  No%inbreeding%effects% •  Due%to%small% ...
Meiosis I
Meiosis I

... • Every living species has a characteristic number of chromosomes. • Humans have 46 in almost all of their cells. ...
Choose the correct option for each question.
Choose the correct option for each question.

... Choose the correct option for each question. 1. Chromosomes consist of large, double-stranded molecules of: a. deoxyribonucleic acid. b. ribonucleic acid. c. autosomal genes. d. recombination genes. 2. Which of the following is NOT one of the many ways that genes can affect behavior? a. Genes may af ...
True or False - University of Phoenix
True or False - University of Phoenix

... Choose the correct option for each question. 1. Chromosomes consist of large, double-stranded molecules of: a. deoxyribonucleic acid. b. ribonucleic acid. c. autosomal genes. d. recombination genes. 2. Which of the following is NOT one of the many ways that genes can affect behavior? a. Genes may af ...
Molecular Biology - Gene Regulation
Molecular Biology - Gene Regulation

... the same proteins. Prokaryotic organisms express the entire DNA they encode in every cell, but not necessarily all at the same time. Proteins are expressed only when they are needed. Eukaryotic organisms express a subset of the DNA that is encoded in any given cell. In each cell type, the type and 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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