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The Two Percent Difference
The Two Percent Difference

... Jonathan Marks explains that the similarity between chimpanzee and human DNA is misunderstood: “…it sounds profound, but only when presented without the context that human DNA is statistically constrained to match banana DNA over 25 percent of the time.” (2002, p. 4) Since there are only four nucleo ...
Hardy-Weinberg Principle
Hardy-Weinberg Principle

... • 1‐Mutation – Mutation rates are generally so low they have  little effect on Hardy‐Weinberg proportions of  common alleles. • ultimate source of genetic variation ...
Applied Genetics - studiegids UGent
Applied Genetics - studiegids UGent

... humans and micro-organisms. Teaching is appoached from a 'problem solving' viewpoint. During the exercices we solve relevant and practical genetic problems. The presented knowledge enables the student to understand actual genetic issues and prepares the student for in depth analyses in the masters c ...
Evolutionary Computation
Evolutionary Computation

... • Optimization takes longer causing early elimination of possible innovations ...
CP-Ch10-MendelianGenetics
CP-Ch10-MendelianGenetics

... Linked genes • The closer the two traits are on the chromosome, the more likely they will be passed on together • When they are far apart and become separated this is called… • CROSSING OVER ...
The Human Genome
The Human Genome

... humans are known as sex chromosomes, because they determine an individual's sex. • To distinguish them from the sex chromosomes, the remaining 44 chromosomes are known as autosomal chromosomes, or autosomes ...
Lecture 12
Lecture 12

... • An example would be loci that are on two different chromosomes and encode unrelated, non-interacting proteins. • If two genes are in linkage disequilibrium, it means that certain alleles of each gene are inherited together more often that would be expected by chance. • This may be due to actual ge ...
MENDELIAN GENETICSonefactorcrosses
MENDELIAN GENETICSonefactorcrosses

... found in the nuclei (eukaryotic) of their cells (DNA) 2. An organism’s phenotype then comes from t h e i r g e n o t y p e “The genes of an organism determines the organism’s phenotype” ...
of gene expression - Université d`Ottawa
of gene expression - Université d`Ottawa

... normalized to ensure equivalent amounts of DNA on array, same efficiency of probe labelling, same effectiveness of hybridization conditions.... so better to use 2 types of fluorescent probes on one microarray ...
genetics ppt review
genetics ppt review

... MEIOSIS for a FRUIT FLY: ...
Extra Homework problems
Extra Homework problems

... S=smooth, s=wrinkled). A heterozygous TtSs individual mates with a homozygous ttss individual. They have progeny: 39 tall wrinkled; 40 short smooth; 9 tall smooth; 10 short wrinkled. Are the two genes linked or on separate chromosomes. If linked what is the distance between these two genes. If the t ...
Evolution without Selection
Evolution without Selection

... Migration is a potent force in evolution Migration is most important in preventing populations from diverging Violation of no-migration assumption violates Conclusion 2: if allele frequencies are given by p & q, the genotype frequencies are p2, 2pq, q2 ...
Phylogenetic tree estimation
Phylogenetic tree estimation

... The study of the relationship of genome structure and function across different biological species or strains. ...
Natural Selection
Natural Selection

... is the process by which these “fit” individuals survive & reproduce to pass on the advantageous traits to their offspring. ...
BIOLOGY 12 MUTATIONS FRAMESHIFT MUTATIONS
BIOLOGY 12 MUTATIONS FRAMESHIFT MUTATIONS

... fat cat. – The rat cat. • Nonsense mutations are point mutations that create a premature "translation stop signal" (or "stop" codon), causing the protein to be shortened. UAC – UAG. The fat cat. – the cat cat. • Silent mutations are point mutations that do not cause amino acid changes within the pro ...
Patterns of Inheritance
Patterns of Inheritance

Lecture 14
Lecture 14

... The probability of recombination occurring between 2 loci on the same chromosome is a function of the distance between them ...
Gene Linkage - Southington Public Schools
Gene Linkage - Southington Public Schools

... Gene Linkage Mendel made 4 major conclusions based on his pea experiments that have become the basis for modern genetics. 1. Traits are controlled by two “factors” (now called alleles). 2. Some alleles are dominant, others are recessive. Mendel did not know about other modes of inheritance. 3. The a ...
Notes: Mutations
Notes: Mutations

... • SB2d. Describe the relationship between changes in DNA and potential appearance of new traits including: ...
DNA and Inherited CharacteristicsSI2014
DNA and Inherited CharacteristicsSI2014

... Genes are located in the chromosomes of cells, with each chromosome pair containing two variants of each of many distinct genes. Each distinct gene chiefly controls the production of a specific protein, which in turn affects the traits of the individual (e.g., human skin color results from the actio ...
populations_lecture
populations_lecture

... chance as a result of non-random carry-over (sampling error) from generation to generation. - leads to: loss of alleles, increased homozygosity, population differentiation (if no migration/gene flow between populations). Drift can increase in small populations due to: fragmentation, bottleneck = eve ...
B2.3 Fact Sheet – Cell division, inheritance and speciation
B2.3 Fact Sheet – Cell division, inheritance and speciation

...  The cyclical nature of speciation There is a lack of…  Valid and  Reliable …evidence  Many early life forms were soft bodied and so few traces remain  Any traces there were have mainly been destroyed by geological activity How much or how little different organisms have changed as life develop ...
The Evolutionary Significance of Chance: Mating Systems
The Evolutionary Significance of Chance: Mating Systems

... Effective Population Size (Ne) •Individual-based simulations of tristylous populations • When Ne < 40, drift can overcome selection and cause the loss of mating types. • Ne < 10, more likely to lose two mating types. ...
Oct. 14th
Oct. 14th

... The Hox gene family are examples of homeotic genes. Homeotic genes are genes that when mutant cause a change in the spatial position of structures (change in address). ...
Quiz 1 MCB141 103/104 * Quiz graded out of 6 points, but score will
Quiz 1 MCB141 103/104 * Quiz graded out of 6 points, but score will

... Oct4, and Nanog. Together, these TFs activate genes required for pluripotency. *If you were marked off and do not know why, come see me. ...
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Microevolution

Microevolution is the change in allele frequencies that occur over time within a population. This change is due to four different processes: mutation, selection (natural and artificial), gene flow, and genetic drift. This change happens over a relatively short (in evolutionary terms) amount of time compared to the changes termed 'macroevolution' which is where greater differences in the population occur.Population genetics is the branch of biology that provides the mathematical structure for the study of the process of microevolution. Ecological genetics concerns itself with observing microevolution in the wild. Typically, observable instances of evolution are examples of microevolution; for example, bacterial strains that have antibiotic resistance.Microevolution over time leads to speciation or the appearance of novel structure, sometimes classified as macroevolution. Macro and microevolution describe fundamentally identical processes on different scales.
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