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APBio Feb7 PopGen
APBio Feb7 PopGen

... • “of genotypes” = those new offspring will inherit the genes of its parents • “caused by factors in the environment” = the differential reproduction often depends on an organism’s ability to live in its environment (how good is it at hiding from predators? Reaching or finding food? Protecting itsel ...
Crossingover and Gene Mapping
Crossingover and Gene Mapping

... may break, and each may swap a portion of its genetic material for the matching portion from its mate. This form of recombination is called crossing-over. When the chromosomes glue themselves back together and separate, each has picked up new genetic material from the other. The distance apart that ...
Evolution of Populations
Evolution of Populations

... phenotypes can be ...
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The genetics of behavior

... Provided direct evidence for a genetic basis of migratory directions in birds. ...
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... form recombinant chromosomes. It can also happen during mitotic division, which may result in loss of heterozygosity. Crossing over is essential for the normal segregation of chromosomes during meiosis. Crossing over also accounts for genetic variation, because due to the swapping of genetic materia ...
Gene Hunting
Gene Hunting

... • Susceptibility -- genes may confer susceptibility rather than necessarily the disease itself (penetrance) • Very high levels of background noise making the search for mutations difficult Population genetics projects very complex and difficult – access to desirable population a key ...
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... ◦ More individuals in a population are produced that can survive ◦ There is variation and some individuals are better adapted to their environment ◦ Individuals compete for limited resources ◦ The better adapted ones will survive and reproduce, passing down their genes ◦ This results in gene frequen ...
First debate of 2008
First debate of 2008

... Some scientists think that people behave as they do according to genetic predispositions or even "animal instincts." This is known as the "nature" theory of human behavior. Other scientists believe that people think and behave in certain ways because they are taught to do so. This is known as the "n ...
Unit 2-Animal Genetics and Selection
Unit 2-Animal Genetics and Selection

... produces offspring ...
Name
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HEREDITY

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SD_30_ques
SD_30_ques

... EXPL: Behavior geneticists are interested in the effects of heredity and life experience on behavior, while evolutionary psychologists are interested in how behavior is related to the process of natural selection. 10) Heritability is an indication of the relative importance of _____ in a phenotype. ...
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ANATOMY AND PHYSIOLOGY TOPIC #: “Topic Title”

... EXPL: Behavior geneticists are interested in the effects of heredity and life experience on behavior, while evolutionary psychologists are interested in how behavior is related to the process of natural selection. 10) Heritability is an indication of the relative importance of _____ in a phenotype. ...
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Genetic variability

... – the more independent factors affect the given trait the more “normal” the population distribution is – if the effect of one factor dominates over the others or there are significant interactions the distribution becomes asymmetrical, discontinuous etc. ...
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Genetic determination of diseases

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intro to inheritance
intro to inheritance

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Learning Targets: Evidence for Evolution Unit 1. I can develop a

... 1. I can develop a discussion/explain Natural Selection using the following terms/phrases: *population *struggle for existence *variation *mutation *mates *competition *resources *environment *phenotypic advantage * offspring * produce more offspring than environment can sustain * favorable phenotyp ...
Biological theories
Biological theories

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(1) Quantitative traits and sequence variation Lecture objectives

... (2) Quantitative trait loci and genetic maps By the end of that lecture you should be able to explain: ...
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Biological explanations of schizophrenia

... Another explanation is the dopamine hypothesis which believes that schizophrenia results from an excess of dopamine activity resulting in dopamine firing too easily or too often. This is significant as dopamine plays a key role in guiding attention, so disturbances in this process may lead to the pr ...
Quantitative Genetics
Quantitative Genetics

... You should note that polygenic inheritance can only be studied in populations because there are multiple genes and multiple alleles being studied. Two individuals cannot account for all the alleles controlling the phenotype. In order to assess the influence of all the alleles available, multiple ind ...
Quantitative Genetics
Quantitative Genetics

... You should note that polygenic inheritance can only be studied in populations because there are multiple genes and multiple alleles being studied. Two individuals cannot account for all the alleles controlling the phenotype. In order to assess the influence of all the alleles available, multiple ind ...
Systems biology and the analysis of genetic variation
Systems biology and the analysis of genetic variation

... approaches to interpret allelic variation involved in human common diseases through the impact on transcriptional regulation. Intersecting results of genome-wide association studies with results of genome-wide chromatin assays suggests that many of the variants underlying complex traits have regulat ...
Walgreens DNA ‘Spit Kit’ Debate
Walgreens DNA ‘Spit Kit’ Debate

... announced that beginning Friday, shoppers at most of Walgreens' 7,500 stores across the U.S. can buy an over-the-counter genetic test . The test would scan their genes for the possibility that they'll develop such conditions as Alzheimer's disease, breast cancer, diabetes, risk of heart attack, or m ...
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Heritability of IQ

Research on heritability of IQ infers from the similarity of IQ in closely related persons the proportion of variance of IQ among individuals in a study population that is associated with genetic variation within that population. This provides a maximum estimate of genetic versus environmental influence for phenotypic variation in IQ in that population. ""Heritability"", in this sense, ""refers to the genetic contribution to variance within a population and in a specific environment"". There has been significant controversy in the academic community about the heritability of IQ since research on the issue began in the late nineteenth century. Intelligence in the normal range is a polygenic trait. However, certain single gene genetic disorders can severely affect intelligence, with phenylketonuria as an example.Estimates in the academic research of the heritability of IQ have varied from below 0.5 to a high of 0.8 (where 1.0 indicates that monozygotic twins have no variance in IQ and 0 indicates that their IQs are completely uncorrelated). Some studies have found that heritability is lower in families of low socioeconomic status. IQ heritability increases during early childhood, but it is unclear whether it stabilizes thereafter. A 1996 statement by the American Psychological Association gave about 0.45 for children and about .75 during and after adolescence. A 2004 meta-analysis of reports in Current Directions in Psychological Science gave an overall estimate of around 0.85 for 18-year-olds and older. The general figure for heritability of IQ is about 0.5 across multiple studies in varying populations. Recent studies suggest that family environment (i.e., upbringing) has negligible long-lasting effects upon adult IQ.
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