Implementation of molecular markers for quantitative traits in
... germplasm lines (Cregan et al. 1999). Therefore, marker alleles tightly linked to the resistance allele in the original mapping populations will also be linked to the resistance allele in other populations derived from the same exotic lines. Resistant progeny lines developed from such crosses will a ...
... germplasm lines (Cregan et al. 1999). Therefore, marker alleles tightly linked to the resistance allele in the original mapping populations will also be linked to the resistance allele in other populations derived from the same exotic lines. Resistant progeny lines developed from such crosses will a ...
Integration of QTL Information with Traditional Animal Breeding
... and the use of markers in selection. Thus, an understanding of the factors that affect the presence and extent of LD is important. The main factors that create LD in a population are mutation, selection, drift (inbreeding), and migration or crossing (see below). The main factor that breaks down LD i ...
... and the use of markers in selection. Thus, an understanding of the factors that affect the presence and extent of LD is important. The main factors that create LD in a population are mutation, selection, drift (inbreeding), and migration or crossing (see below). The main factor that breaks down LD i ...
Chapter 26: Quantitative Genetics
... influenced by environmental factors. Because they can be described numerically, many of the complex traits are also termed quantitative traits. As shown in Table 26.1, quantitative traits can be categorized as anatomical, physiological, or behavioral. Moreover, many human diseases exhibit characteri ...
... influenced by environmental factors. Because they can be described numerically, many of the complex traits are also termed quantitative traits. As shown in Table 26.1, quantitative traits can be categorized as anatomical, physiological, or behavioral. Moreover, many human diseases exhibit characteri ...
Construction of a genetic linkage map of Thlaspi
... et al., 2000; Assunção et al., 2003b; Roosens et al., 2003). In general, this variation is of a quantitative nature, probably as a result of the effect of allelic variation at several loci (multigenic), combined with an environmental effect on each locus. This leads to a continuous phenotypic distri ...
... et al., 2000; Assunção et al., 2003b; Roosens et al., 2003). In general, this variation is of a quantitative nature, probably as a result of the effect of allelic variation at several loci (multigenic), combined with an environmental effect on each locus. This leads to a continuous phenotypic distri ...
The genetics of deafness - Archives of Disease in Childhood
... accounting for 70-85% of genetic non-syndromic deafness.34 Genes acting in an autosomal dominant manner account for 12-25%3 of such cases and sex linked genes account for approximately 3%.' Although it may be possible to recognise the autosomal dominant and sex linked types on the basis of the inher ...
... accounting for 70-85% of genetic non-syndromic deafness.34 Genes acting in an autosomal dominant manner account for 12-25%3 of such cases and sex linked genes account for approximately 3%.' Although it may be possible to recognise the autosomal dominant and sex linked types on the basis of the inher ...
Neutral and Non-Neutral Evolution of Duplicated Genes with Gene
... can have positive or negative effects, which largely depends on what kind of mutation is involved in the conversion tract. In other words, in most cases selection targets the mutation rather than the conversion event itself. There are many possible situations where gene conversion is selectively pre ...
... can have positive or negative effects, which largely depends on what kind of mutation is involved in the conversion tract. In other words, in most cases selection targets the mutation rather than the conversion event itself. There are many possible situations where gene conversion is selectively pre ...
X r Y
... • Mendel realized that the results of his genetic crosses followed rules of probability. • The rule of multiplication says that the chance of two events occurring together is the product of their chances of occurring separately. ...
... • Mendel realized that the results of his genetic crosses followed rules of probability. • The rule of multiplication says that the chance of two events occurring together is the product of their chances of occurring separately. ...
Darwin`s big problem and Mendelian genetics
... an individual in which the alleles of a given gene are the same is called homozygous − an individual may be homozygous dominant or homozygous recessive an individual in which the alleles of a given gene are different is called heterozygous an individual’s combination of alleles is its genotype − a p ...
... an individual in which the alleles of a given gene are the same is called homozygous − an individual may be homozygous dominant or homozygous recessive an individual in which the alleles of a given gene are different is called heterozygous an individual’s combination of alleles is its genotype − a p ...
PCR-based Markers and Cut Flower Longevity in Carnation
... character could be an important tool to improve the efficiency of breeding programs, considering that this is one of the most important traits selected by breeders. Longevity is probably a complex quantitative trait, involving several genes showing predominantly additive effects. A previous study ca ...
... character could be an important tool to improve the efficiency of breeding programs, considering that this is one of the most important traits selected by breeders. Longevity is probably a complex quantitative trait, involving several genes showing predominantly additive effects. A previous study ca ...
2013 - Allied Academies
... polymorphisms in a species, provide material for natural selection and even lead to speciation [8-10]. John [11] has made the point that the types of chromosome Biomed Res- India 2013 Volume 24 Issue 1 ...
... polymorphisms in a species, provide material for natural selection and even lead to speciation [8-10]. John [11] has made the point that the types of chromosome Biomed Res- India 2013 Volume 24 Issue 1 ...
Work Packet - Huth Science
... You will determine your phenotype and try to determine your genotype for the traits listed below. Remember, if you show a dominant trait, you may be homozygous or heterozygous for that trait. Suppose, however, that one of your parents show the recessive trait. In that case, the parent would have pas ...
... You will determine your phenotype and try to determine your genotype for the traits listed below. Remember, if you show a dominant trait, you may be homozygous or heterozygous for that trait. Suppose, however, that one of your parents show the recessive trait. In that case, the parent would have pas ...
PDF
... the present explosion in obesity. However, not everyone becomes overweight. Studies on heritability of human adiposity have estimated that genetic factors contribute up to 40-70% of the variance of adiposity.3,4 Genome Wide Association Studies (GWAS) have contributed to researching genetic variation ...
... the present explosion in obesity. However, not everyone becomes overweight. Studies on heritability of human adiposity have estimated that genetic factors contribute up to 40-70% of the variance of adiposity.3,4 Genome Wide Association Studies (GWAS) have contributed to researching genetic variation ...
Genetic variation within Cape stumpnose, Sparidae) Rhabdosargus holubi
... Due to the nature of the marine environment genetic studies allow insight into behaviour and natural history that is difficult or impossible to identify by direct field observation. Current as well as historical population demography and gene flow can be detected by using molecular techniques. Genet ...
... Due to the nature of the marine environment genetic studies allow insight into behaviour and natural history that is difficult or impossible to identify by direct field observation. Current as well as historical population demography and gene flow can be detected by using molecular techniques. Genet ...
Correlations between sex rate estimates and fitness across
... One explanation for the success of sexual reproduction is that sex increases the efficacy of natural selection. Recombination and segregation lead to fitness variance among offspring which then offers a wider target for natural selection. Consequently, adaptation to changing environments is accelera ...
... One explanation for the success of sexual reproduction is that sex increases the efficacy of natural selection. Recombination and segregation lead to fitness variance among offspring which then offers a wider target for natural selection. Consequently, adaptation to changing environments is accelera ...
Exploring the association between the 2
... between the 2-repeat allele and the psychopathic personality traits variables. Since the psychopathic personality traits scale was coded continuously and approximated normality, ordinary least squares (OLS) regression was estimated. Importantly, all of the analyses in this study were estimated using ...
... between the 2-repeat allele and the psychopathic personality traits variables. Since the psychopathic personality traits scale was coded continuously and approximated normality, ordinary least squares (OLS) regression was estimated. Importantly, all of the analyses in this study were estimated using ...
Pedigree Chart Qu
... Explain one piece of evidence from the diagram which proves that the allele for Tay-Sachs disease is recessive. Explain one piece of evidence from the diagram which proves that the allele for Tay-Sachs disease is not on the X chromosome. In a human population, one in every 1000 children born had Tay ...
... Explain one piece of evidence from the diagram which proves that the allele for Tay-Sachs disease is recessive. Explain one piece of evidence from the diagram which proves that the allele for Tay-Sachs disease is not on the X chromosome. In a human population, one in every 1000 children born had Tay ...
Origin and evolution of Y chromosomes: Drosophila tales
... genes: 12 are currently known and indirect evidence suggests an upper bound of 20 genes [21–24]. These genes are unusually large, owing to Mbp-sized introns comprising repetitive DNA [25]. D. melanogaster Y-linked genes have two additional important features; many (and probably all) have male-relat ...
... genes: 12 are currently known and indirect evidence suggests an upper bound of 20 genes [21–24]. These genes are unusually large, owing to Mbp-sized introns comprising repetitive DNA [25]. D. melanogaster Y-linked genes have two additional important features; many (and probably all) have male-relat ...
Genetic basis of mandibular prognathism
... related to the co-occurring morphological and functional disorders. It is believed that the defect is autosomal dominant with incomplete penetration or autosomal recessive and the heritability ratio has been estimated at h 2=0.31 6. It is also postulated that the mutations and polymorphisms responsi ...
... related to the co-occurring morphological and functional disorders. It is believed that the defect is autosomal dominant with incomplete penetration or autosomal recessive and the heritability ratio has been estimated at h 2=0.31 6. It is also postulated that the mutations and polymorphisms responsi ...
Distinguishing Different DNA Heterozygotes by
... These are not identical because such curves are skewed at low temperatures from heteroduplex contributions. In either case, the Tm is only one point on the melting curve. Use of the complete melting curve, conveniently displayed as difference plots, allows differentiation of most heterozygotes (21 o ...
... These are not identical because such curves are skewed at low temperatures from heteroduplex contributions. In either case, the Tm is only one point on the melting curve. Use of the complete melting curve, conveniently displayed as difference plots, allows differentiation of most heterozygotes (21 o ...
Concepts of Biology
... • Explain Mendel’s law of segregation and independent assortment in terms of genetics and the events of meiosis • Explain the purpose and methods of a test cross The seven characteristics that Mendel evaluated in his pea plants were each expressed as one of two versions, or traits. Mendel deduced fr ...
... • Explain Mendel’s law of segregation and independent assortment in terms of genetics and the events of meiosis • Explain the purpose and methods of a test cross The seven characteristics that Mendel evaluated in his pea plants were each expressed as one of two versions, or traits. Mendel deduced fr ...
8 PATTERNS OF INHERITANCE |
... • Explain Mendel’s law of segregation and independent assortment in terms of genetics and the events of meiosis • Explain the purpose and methods of a test cross The seven characteristics that Mendel evaluated in his pea plants were each expressed as one of two versions, or traits. Mendel deduced fr ...
... • Explain Mendel’s law of segregation and independent assortment in terms of genetics and the events of meiosis • Explain the purpose and methods of a test cross The seven characteristics that Mendel evaluated in his pea plants were each expressed as one of two versions, or traits. Mendel deduced fr ...
Polymorphism (biology)
Polymorphism in biology is said to occur when two or more clearly different phenotypes exist in the same population of a species—in other words, the occurrence of more than one form or morph. In order to be classified as such, morphs must occupy the same habitat at the same time and belong to a panmictic population (one with random mating).Polymorphism as described here involves morphs of the phenotype. The term is also used somewhat differently by molecular biologists to describe certain point mutations in the genotype, such as SNPs (see also RFLPs). This usage is not discussed in this article.Polymorphism is common in nature; it is related to biodiversity, genetic variation and adaptation; it usually functions to retain variety of form in a population living in a varied environment. The most common example is sexual dimorphism, which occurs in many organisms. Other examples are mimetic forms of butterflies (see mimicry), and human hemoglobin and blood types.According to the theory of evolution, polymorphism results from evolutionary processes, as does any aspect of a species. It is heritable and is modified by natural selection. In polyphenism, an individual's genetic make-up allows for different morphs, and the switch mechanism that determines which morph is shown is environmental. In genetic polymorphism, the genetic make-up determines the morph. Ants exhibit both types in a single population.Polymorphism also refers to the occurrence of structurally and functionally more than two different types of individuals, called zooids within the same organism. It is a characteristic feature of Cnidarians.For example, in Obelia there are feeding individuals, the gastrozooids; the individuals capable of asexual reproduction only, the gonozooids, blastostyles and free-living or sexually reproducing individuals, the medusae.