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INTEGRATING MULTIPLE EVOLUTIONARY
INTEGRATING MULTIPLE EVOLUTIONARY

... heterozygosity of neutral loci over time (Hartl and Clark, 2007), ...
hardy weinberg examples for review
hardy weinberg examples for review

... The algebraic method enables us to work backward as well as forward. In fact, because we chose to make B fully dominant, the only way that the frequency of B and b in the gene pool could be known is by determining the frequency of the recessive phenotype (gray) and computing from it the value of q. ...
Allelic Frequency
Allelic Frequency

... ickle-cell anemia, a potentially fatal disease, results from a mutant allele for hemoglobin, the oxygencarrying protein on red blood cells. There are two alleles for the production of hemoglobin. Individuals with two Hemoglobin A alleles (AA) have normal red blood cells. Those with two mutant Hemogl ...
to see the paper as an MS Word file
to see the paper as an MS Word file

... and allelic spatial clumping. After 800 generations, 52% of the individuals in the system belonged to homogeneous clumps (i.e. subpopulations without allelic variation), of 100 or more individuals. This striking degree of population substructure emerged from the initially random distribution of both ...
Mendelian Genetics Objectives (Chapter 14)
Mendelian Genetics Objectives (Chapter 14)

... and genotypic ratios of the F2 generation Predict the results of genetic crosses involving three or more unlinked genes Give an example of incomplete dominance and explain how it differs from "blending inheritance" Describe inheritance within the ABO blood group system Define and give an example of ...
Hardy-Weinberg Practice Problems
Hardy-Weinberg Practice Problems

... 6. If 98 out of 200 individuals in a population express the recessive phenotype, what percent of the population are heterozygotes? 7. The IA "allele" for the ABO blood groups actually consists of two subtypes, IA1 and IA2, either being considered "IA". In Caucasians, about 3/4 of the IA alelles are ...
File
File

... It is the process of change in the genetic composition of a population due to chance or random events rather than by natural selection, resulting in changes in allele frequencies over time. The effect of genetic drift in large populations is usually negligible whereas in small populations, it predom ...
Ch04 Extensions of Mendelian Genetics
Ch04 Extensions of Mendelian Genetics

... – X is a large chromosome and encodes many genes – Y is a small chromosome with few genes (not homologous to X in the traditional sense but has pairing region for synapsis 联会) – Males therefore have a single copy of genes encoded by the X chromosome, hemizygous(半合子) • These genes have unique inherit ...
Human Inheritance
Human Inheritance

... • Human traits are controlled by: – single genes with two alleles –others by single genes with multiple alleles. –Still other traits are controlled by many genes that act together ...
One Pair of Contrasting Traits
One Pair of Contrasting Traits

... •Traits Controlled by Genes with Three or More Alleles Some traits, such as the ABO blood type alleles, are controlled by three or more alleles. ...
Genetics and Speciation
Genetics and Speciation

... alleles and thus increase variation in a population.  Sexual reproduction creates the possibility that mating ...
Founder Effects, Inbreeding and Hybrid Zones Lecture Outline
Founder Effects, Inbreeding and Hybrid Zones Lecture Outline

... •  Both occur due to a build up of shared ancestry within a population. •  Drift occurs as a result of finite population size, whereas consanguinity could technically occur even in an infinitely large population. •  Drift results in a change in allele frequencies, but genotype frequencies remain i ...
Modes of Inheritance
Modes of Inheritance

... What are Polygenic traits? a) Polygenic traits are traits controlled by two or more genes ...
Genetics Unit Study Guide – Teacher Version
Genetics Unit Study Guide – Teacher Version

... 33. Polydactyly (presence of an extra finger) is due to a dominant factor. When one parent is polydactylous, but heterozygous, and the other parent is normal, what would be the probability of their having a child without polydactylous? 50% or 2:2 ...
Document
Document

Chapter 11 GENETICS
Chapter 11 GENETICS

... Recessive alleles are written in lower case t = short In this example:  There ...
Genetics Since Mendel A. Incomplete Dominance
Genetics Since Mendel A. Incomplete Dominance

... 1. Many traits are controlled by more than two alleles. 2. A trait that is controlled by more than two alleles is said to be controlled by multiple alleles. ...
Inheritance - West East University
Inheritance - West East University

... each cell when a person has an autosomal recessive disorder – A mutation is a change to the structure of a gene – It occurs when a gene is damaged or changed, altering the genetic information carried by that gene ...
Hardy Weinberg PPT File
Hardy Weinberg PPT File

... 3. no mutations occur in any individuals DNA within this population. 4. all mating is totally random (No sexual selection) 5. natural selection is not occurring ...
Genetics cloze exercise
Genetics cloze exercise

... having purple flowers is a _________________ trait so if a plant receives a purple gene from one parent and a white gene from the other parent, it will only have _________________ flowers. Mendel made another interesting observation: two purple flowers sometimes produced offspring with _____________ ...
Document
Document

... 46. Valerie and Scott get married. A few years later they have their first child, Taylor. Their child appears to have little or no skin pigmentation, very light eyes, and nearly white hair. Valerie and Scott both have medium skin pigmentation, brown eyes, and brown hair. 47. A person with a recessiv ...
Genetic Drift and Natural Selection
Genetic Drift and Natural Selection

... (varying p from 0.1 to 0.9 and N from 10 to 250). N is the population size and p is f(A). Once you have the conditions set, just hit “Start” 8 times and the program will record the results. Record how many simulations had a p=1, 1>p>0, and p=0 in Table 1 below. For example, Figure 1 would be scored ...
A theory of mate choice based on heterozygosity
A theory of mate choice based on heterozygosity

... (Hamilton, 1980; Jaenike, 1978). Mate choice in general magnifies this benefit by introducing new genetic material and allowing superior gametes from each sex to unite. Thus, when sex is important, mate choice should amplify its benefits. Should a female then prefer males who are more heterozygous? ...
Answers to Mendelian Genetics Problems
Answers to Mendelian Genetics Problems

... Long-wing, red-eyed individuals would result from eight of the possible 16 combinations, and dumpy, white-eyed individuals would never be produced. 9. Breed the fly to one from the white-eyed stock. If half of the offspring are white-eyed, then your fly is a heterozygote. 10. Both parents carry at l ...
Part 1 Population and Community Dynamics
Part 1 Population and Community Dynamics

... Review Evolution  by  Natural  Selection   •  new  variants  of  a  species  are  continually  arising  in  a   population   •  variants  can  be  successful  and  lead  to  new  species   •  variants  can  be  unsuccessful  and  die  off ...
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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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