• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Slide 1
Slide 1

... With cell membranes unable to transport chloride ions, tissues throughout the body malfunction. Children with CF have serious digestive problems and produce thick, heavy mucus that clogs their lungs and breathing passageways. ...
M2_Inbreeding - Crop and Soil Science
M2_Inbreeding - Crop and Soil Science

... As gene frequencies become more dispersed towards the extremes – there is an increase in homozygosity and decrease in heterozygosity within each sub-population – genetic uniformity increases within sub-populations Genotype ...
Of Flies and Fishes - School of Natural Sciences
Of Flies and Fishes - School of Natural Sciences

... Analysis of early insect development suggests that only about 100 genes are involved in controlling patterning during early development. And in the nematode at least 50 genes are known that control vulva development (13). If one thinks of, say, 100 genes for each multicellular structure in the adult ...
Chp 23 Evolution of Populations
Chp 23 Evolution of Populations

... ï Such disagreements indicate that the study of evolution is very lively and that it continues to develop as a science. B. The genetic structure of a population is defined by its allele and genotype frequencies Population = Localized group of organisms which belong to the same species Species =A gro ...
THE EFFECT OF INBREEDING ON THE VARIATION DUE TO
THE EFFECT OF INBREEDING ON THE VARIATION DUE TO

... where in is the mean of all crosses, ai, aj are the general combining abilities of the ith and jth lines and aij is the interaction term, the special combining ability. The term ‘‘ top-cross ” refers to the crosses made between a line and a sample of individuals from the random-bred population. The ...
Genetics: The Science of Heredity
Genetics: The Science of Heredity

... a. Who? Gregor ___________, a monk b. When? 1850s c. Where? In the garden of a ___________ (home for monks) in Central Europe d. What? ___________ plants with different characteristics e. Traits = ___________ characteristics (examples: for humans, eye color; for pea plants, height of plant) f. Mende ...
Patterns of Non Mendelian Inheritance
Patterns of Non Mendelian Inheritance

... Females sex chromosomes: XX • Males sex chromosomes: XY • Females get sex linked diseases less often than males because it is less likely to inherit two “bad” genes than it is to inherit one. • Females must inherit one gene from her father and one from her mother. • Males only inherit one X linked ...
PGD
PGD

... even if they do not have the defect. The workup for PGD is expensive and labor ...
The genetics of self- incompatibility in white clover
The genetics of self- incompatibility in white clover

... two major classes of SI systems, gametophytic and sporophytic. In many cases, SI is controlled by a single genetic locus, the S-locus consisting of a large number of alleles. In most families, GSI has been found controlled by a single locus (the S-locus) which harbours separate pistil and pollen spe ...
The Bright Light of Science: Critical whiteness studies in a European
The Bright Light of Science: Critical whiteness studies in a European

... both defined as a colour and colourless. What makes the white hue significant is that it is the only hue with a complete opposite, and as such it is laying the groundwork for the dichotomy of white/black. Skin is likewise an unstable category. In this category white ceases to be a colour, but rather ...
Human Genetics
Human Genetics

... • Explain how a gene alone usually does not solely determine a trait • Distinguish between autosomal recessive and autosomal dominant inheritance • Explain how Mendel’s experiments followed the inheritance of more than one gene • Explain how the law of independent assortment reflects the events of m ...
Genetic algorithm
Genetic algorithm

... Genetic algorithms are implemented as a computer simulation in which a population of abstract representations (called chromosomes or the genotype or the genome) of candidate solutions (called individuals, creatures, or phenotypes) to an optimization problem evolves toward better solutions. Tradition ...
Heredity The passing of traits from parent to offspring
Heredity The passing of traits from parent to offspring

... In most heterozygous organisms the dominant phenotype is expressed, but SOMETIMES both alleles are expressed, like in sicklecell disease. This is called CODOMINANCE. ...
Conservatism and novelty in the genetic architecture of adaptation in
Conservatism and novelty in the genetic architecture of adaptation in

... phenotypic effect shared by distinct Heliconius species and underlying the diversification of colour patterns (Joron et al., 2006; Kronforst et al., 2006a; Papa et al., 2008). This conserved ‘toolkit’ of genes is mainly distributed across four of the 21 Heliconius chromosomes; however, several minor ...
Genomics in Cardiovascular Disease
Genomics in Cardiovascular Disease

... The Success of Genetic Linkage Analysis Single gene disorders are the phenotypic consequences of rare DSVs that impart large effect sizes. The mutation is both necessary and sufficient to induce the disease. Familial hypertrophic cardiomyopathy was the first cardiovascular single gene disorder for w ...
Document
Document

... *A testcross is the procedure in which an individual of unknown genotype is crossed with a homozygous recessive individual. *A testcross can determine the genotype of any individual whose phenotype is dominant. *For example, in rabbits, both of the genotypes BB and Bb result in a black coat. A black ...
Alleles - Amazon S3
Alleles - Amazon S3

... • In reality, population size is not constant! • “Effective population size” captures what the size would have to be for the population to behave like an idealized population • Larger effective population size -> more genetic diversity • Recent population explosion -> tons of new rare alleles. ...
Genetics - LauraFlemingBiology
Genetics - LauraFlemingBiology

... expected genotypic and phenotypic ratios? ...
carrier screening for sickle cell disease and the thalassemias
carrier screening for sickle cell disease and the thalassemias

... traits (SS). People with sickle cell disease are at increased risk for pain crises where they have pain in their joints and organs and may feel weak. Eventually, damage may build up in the liver and spleen. People with sickle cell disease are more prone to infections and the disease may lead to a sh ...
Medical Genetics for the Practitioner
Medical Genetics for the Practitioner

... of specific traits, disorders, or other reproductive events as well as the relationships of individuals in the family. In some instances, the pedigree will provide crucial diagnostic information. This is true especially in autosomal dominant disorders that have variable expressivity. Extended family ...
16.1 The Canonical Genetic Algorithm
16.1 The Canonical Genetic Algorithm

... is lined up for the reproduction of one or more offspring (dependent on the recombination techniques used). Then whether or not they actually reproduce is probabilistic, and occurs with a probability pc. If they do reproduce, then their offspring are generated using a recombination and mutation proc ...
or Rr
or Rr

... Y-Linked Inheritance • We will now look at how various kinds of traits are inherited from a pedigree point of view. • Traits on the Y chromosome are only found in males, never in females. • The father’s traits are passed to all sons. • Dominance is irrelevant: there is only 1 copy of each Y-linked ...
Basic Genetics
Basic Genetics

... Particulate Inheritance ▪Mendel stated that physical traits are inherited as “particles” ▪Mendel did not know that the “particles” were actually Chromosomes & DNA ...
Chapter 8 - cmbiology
Chapter 8 - cmbiology

... Mendel’s Hypotheses • The four hypotheses Mendel developed as a result of his experiments now make up the _______________ theory of _______________--the foundation of genetics. 1. For each inherited trait, an individual has two copies of the gene--one from each parent. 2. There are alternative versi ...
The MAOA Gene Predicts Credit Card Debt ∗ London School of Economics
The MAOA Gene Predicts Credit Card Debt ∗ London School of Economics

... gratification, displaying less consideration of future consequences, and reduced information processing. Hence, we hypothesize that people with less transcriptionally efficient alleles of the MAOA gene are more likely to accrue credit card debt. Although recent studies have already shown that a larg ...
< 1 ... 113 114 115 116 117 118 119 120 121 ... 421 >

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.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report