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Population Genetics (Chp. 13-15) Allele Frequencies- Chp. 13 pp. 263-276
Population Genetics (Chp. 13-15) Allele Frequencies- Chp. 13 pp. 263-276

... Chapter 13 Population- any group of members of the same species in a given geographical area at a specific time Population genetics – a branch that considers all of the alleles in a population which constitute a gene pool Gene Flow- the movement of alleles due to migration between populations I. Imp ...
ppt
ppt

... If common ancestors are inbred as well: Ni ...
second of Chapter 17, Molecular Evolution and Population Genetics
second of Chapter 17, Molecular Evolution and Population Genetics

... The heterozygote is favored over the homozygous dominant genotype (overdominance) in areas where malaria is prevalent. The homozygous recessive is usually lethal. ...
Genetic Engineering - Roslyn Public Schools
Genetic Engineering - Roslyn Public Schools

... Genetic Engineering  This is any way the the genetic material of an organism is changed in order to have desired traits.  Geneticists have many techniques to do this. ...
Population Genetics I.
Population Genetics I.

... active sexual selection of mates “isolation by distance” ...
Inbreeding and outbreeding
Inbreeding and outbreeding

...  Increases the proportion of homozygotes in the population similar to self-fertilisation.  Inbreeding can result in rare recessive alleles being expressed – rare and harmful recessive alleles are normally protected by dominance. More common when parents are related.  Selection against disadvantag ...
Inbreeding 1
Inbreeding 1

... population. This “random inbreeding” is the same thing as genetic drift. ...
Green Chapter 17 Test Review
Green Chapter 17 Test Review

... How is incomplete dominance different from regular genetics? What would it look like? ...
Variation – Chapter 9
Variation – Chapter 9

... • Asks what happens when one or more of the assumptions are relaxed • Violations of H-W are the major factors the cause evolutionary change Frequencies of alleles • Frequency of heterozygotes are highest when p = q • When an allele is rare, almost all its carriers are heterozygotes – This can cause ...
Changing Allele Frequencies
Changing Allele Frequencies

... Mutations that lead to lethal traits are often eliminated from the gene pool, however, some mutant alleles can persist in heterozygotes Genetic load refers to the collection of these deleterious alleles in the population – Each of us has 5-10 recessive lethal alleles ...
mean d 2 - Salamander Genome Project
mean d 2 - Salamander Genome Project

Inbreeding - People Server at UNCW
Inbreeding - People Server at UNCW

... Prior to introduction, there was a continuous decline in hatching success. Immediately after the introduction, hatching success ...
ppt - Courses
ppt - Courses

... •  Will not change the overall allele frequencies; will change _______________ frequencies ...
Analysis of inbreeding depression in the first litter size of mice in a long
Analysis of inbreeding depression in the first litter size of mice in a long

Ch 15 Genetic Engineering
Ch 15 Genetic Engineering

... Review what is the relationship between genetic variations and mutations. Explanation Write a paragraph in which you suggest ways that plants could be genetically altered to improve the world’s food supply ...
15.1_Selective_Breeding
15.1_Selective_Breeding

... Review what is the relationship between genetic variations and mutations. Explanation Write a paragraph in which you suggest ways that plants could be genetically altered to improve the world’s food supply ...
Lecture 10
Lecture 10

... Advantage of relatedness Many invasive species are not really bottlenecked ...
Udspaltning af den recessive q = 0,01 og p = 0,99 f(rr) = q2 = 0,012
Udspaltning af den recessive q = 0,01 og p = 0,99 f(rr) = q2 = 0,012

... Crossing demands a surplus of females • An RDM or SDM cow bears in average only 1.1 to 1.2 heifer calf, which is sufficient to maintain the pure bred population. • Therefore, crossing production is not possible in these breeds, if pure breeding is desirable in the entire population ...
Nov8 - Salamander Genome Project
Nov8 - Salamander Genome Project

... Anytime F is greater than 0, the frequency of heterozygotes is Lower in an inbred population than in a random mating population. ...
presentation source
presentation source

... • The degree of inbreeding Fx is the probability of identical homozygosity due to common ancestors ...
third and last of Chapter 17, Molecular Evolution and Population
third and last of Chapter 17, Molecular Evolution and Population

... A complex pedigree in which the individual I received genes from different ancestors through multiple paths ...
Evolution and Classification Review
Evolution and Classification Review

... differences in the animals, and his observations that habitat can affect the adaptations of organisms. ...
Evolution and Classification Review
Evolution and Classification Review

... differences in the animals, and his observations that habitat can affect the adaptations of organisms. ...
changes the natural gene flow
changes the natural gene flow

... would normally occur within a population. ...
13-1 Changing the Living World
13-1 Changing the Living World

...  hardier than either parent (hybrid vigor)  disease resistant  mule, lyger, etc. ...
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Inbreeding

Inbreeding is the sexual reproduction of offspring from the mating or breeding of individuals or organisms that are closely related genetically. By analogy, the term is used in human reproduction, but more commonly refers to the genetic disorders and other consequences that may arise from incestuous sexual relationships and consanguinity.Inbreeding results in homozygosity, which can increase the chances of offspring being affected by recessive or deleterious traits. This generally leads to a decreased biological fitness of a population (called inbreeding depression), which is its ability to survive and reproduce. An individual who inherits such deleterious traits is referred to as inbred. The avoidance of such deleterious recessive alleles caused by inbreeding, via inbreeding avoidance mechanisms, is the main selective reason for outcrossing. Crossbreeding between populations also often has positive effects on fitness-related traits.Inbreeding is a technique used in selective breeding. In livestock breeding, breeders may use inbreeding when, for example, trying to establish a new and desirable trait in the stock, but will need to watch for undesirable characteristics in offspring, which can then be eliminated through further selective breeding or culling. Inbreeding is used to reveal deleterious recessive alleles, which can then be eliminated through assortative breeding or through culling. In plant breeding, inbred lines are used as stocks for the creation of hybrid lines to make use of the effects of heterosis. Inbreeding in plants also occurs naturally in the form of self-pollination.
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