Biology: Concepts and Connections, Fifth Edition
... The gene pool of a nonevolving population remains constant over the generations In a nonevolving population, the shuffling of alleles that accompanies sexual reproduction does not alter the genetic makeup of the population In Hardy-Weinberg equilibrium, the frequency of each allele in the gene p ...
... The gene pool of a nonevolving population remains constant over the generations In a nonevolving population, the shuffling of alleles that accompanies sexual reproduction does not alter the genetic makeup of the population In Hardy-Weinberg equilibrium, the frequency of each allele in the gene p ...
empirical evidence for bet hedging Modes of response to
... date in great tits is adaptive in a British population [53], but these norms of reaction are maladaptive and variable in a Dutch population [61], indicating that the effectiveness of plasticity under changing environments depends on the temporal stability of the particular mechanism underlying the r ...
... date in great tits is adaptive in a British population [53], but these norms of reaction are maladaptive and variable in a Dutch population [61], indicating that the effectiveness of plasticity under changing environments depends on the temporal stability of the particular mechanism underlying the r ...
Entering the second century of maize quantitative genetics
... trait such as fitness may not be directly applicable to other, more specific traits, yet the fact that over half of the maize genome showed a detectable fitness effect implies that a large number of genes are not only involved in fitness but have segregating alleles with significant effects. Second, ...
... trait such as fitness may not be directly applicable to other, more specific traits, yet the fact that over half of the maize genome showed a detectable fitness effect implies that a large number of genes are not only involved in fitness but have segregating alleles with significant effects. Second, ...
The case for transgenerational epigenetic inheritance in humans
... that result from disruption to the epigenetic state, ‘‘epimutations’’, can be inherited across generations. Prader– Willi syndrome is a rare disease characterised by decreased mental capacity and obesity. The syndrome is generally associated with mutation in a set of genes on chromosome 15, but some ...
... that result from disruption to the epigenetic state, ‘‘epimutations’’, can be inherited across generations. Prader– Willi syndrome is a rare disease characterised by decreased mental capacity and obesity. The syndrome is generally associated with mutation in a set of genes on chromosome 15, but some ...
fulltext - DiVA portal
... history and find out what causes the variation in success of different parthenogens. I also evaluate the contribution of asexuality, hybridity and polyploidy as explanations behind geographical parthenogenesis in insects. I conclude that what is called O. scaber is, in fact, a set of geographical po ...
... history and find out what causes the variation in success of different parthenogens. I also evaluate the contribution of asexuality, hybridity and polyploidy as explanations behind geographical parthenogenesis in insects. I conclude that what is called O. scaber is, in fact, a set of geographical po ...
Alleles of a reelin CGG repeat do not convey
... are not definitive. Linkage only identifies large regions of chromosomes, and in the case of the diffuse findings from autism families, sifting through these regions to find true liability mutations is likely to be onerous. A shortcut method is association analysis of candidate genes, which are cand ...
... are not definitive. Linkage only identifies large regions of chromosomes, and in the case of the diffuse findings from autism families, sifting through these regions to find true liability mutations is likely to be onerous. A shortcut method is association analysis of candidate genes, which are cand ...
Full Text - Gene, Cell and Tissue
... Figure 2. The Results of HahI Digestion for the Detection of p.R390H ...
... Figure 2. The Results of HahI Digestion for the Detection of p.R390H ...
Morphological divergence patterns among populations of
... The evolutionary allometries observed were independent of within-group static allometries. Sexually dimorphic patterns were observed in size variation and within-population allometries. Specimens from freshwater (higher predation) sites presented smaller sizes, relatively longer caudal regions, lowe ...
... The evolutionary allometries observed were independent of within-group static allometries. Sexually dimorphic patterns were observed in size variation and within-population allometries. Specimens from freshwater (higher predation) sites presented smaller sizes, relatively longer caudal regions, lowe ...
ADAPT, MOVE OR PERISH THE INTERACTION OF GENETICS
... Habitat loss and degradation, and human-induced climate change are two of the main current threats to biodiversity. While the impacts of these pressures separately on species survival are being investigated extensively, we have only just begun to unravel the combined impact of these two pressures on ...
... Habitat loss and degradation, and human-induced climate change are two of the main current threats to biodiversity. While the impacts of these pressures separately on species survival are being investigated extensively, we have only just begun to unravel the combined impact of these two pressures on ...
Bringing schizophrenia into the Darwinian fold
... The bicameral mind supposedly lasted until about 1,000 bc, with its subsequent breakdown resulting in man acquiring consciousness for the first time. According to Jaynes, the bicameral mind started breaking down as a result of several causes, including ‘the weakening of the auditory by the advent of ...
... The bicameral mind supposedly lasted until about 1,000 bc, with its subsequent breakdown resulting in man acquiring consciousness for the first time. According to Jaynes, the bicameral mind started breaking down as a result of several causes, including ‘the weakening of the auditory by the advent of ...
A novel mutation in the short-wavelength-sensitive
... DNA from 4041’s mutant allele. All subjects showed heteroduplexes, indicating that none were homozygous for 4041’s mutation. In addition, an aliquot of amplified DNA from each control subject was mixed with the corresponding amplified segment from subject 4041’s wild-type allele. Heteroduplexes were ...
... DNA from 4041’s mutant allele. All subjects showed heteroduplexes, indicating that none were homozygous for 4041’s mutation. In addition, an aliquot of amplified DNA from each control subject was mixed with the corresponding amplified segment from subject 4041’s wild-type allele. Heteroduplexes were ...
8 PATTERNS OF INHERITANCE |
... characteristics. Out of these crosses, all of the F1 offspring had the phenotype of one parent, and the F2 offspring had a 3:1 phenotypic ratio. On the basis of these results, Mendel postulated that each parent in the monohybrid cross contributed one of two paired unit factors to each offspring, and ...
... characteristics. Out of these crosses, all of the F1 offspring had the phenotype of one parent, and the F2 offspring had a 3:1 phenotypic ratio. On the basis of these results, Mendel postulated that each parent in the monohybrid cross contributed one of two paired unit factors to each offspring, and ...
Genetic recombination
... Disjunction of homologous chromosomes Migration of BC chromosomes to poles (n chromosomes to each poles) !!! Independent combination of nonhomologous chromosomes = interchromosomal recombination 2n ...
... Disjunction of homologous chromosomes Migration of BC chromosomes to poles (n chromosomes to each poles) !!! Independent combination of nonhomologous chromosomes = interchromosomal recombination 2n ...
The genetic consequences of selection in natural populations
... So far this model has ignored dominance, which has important implications for the calculation of s. In population genetic models of directional selection, dominance is most often accounted for with the dominance coefficient, h. In the single locus, two-allele model described above, the fitness of ea ...
... So far this model has ignored dominance, which has important implications for the calculation of s. In population genetic models of directional selection, dominance is most often accounted for with the dominance coefficient, h. In the single locus, two-allele model described above, the fitness of ea ...
Concepts of Biology
... characteristics. Out of these crosses, all of the F1 offspring had the phenotype of one parent, and the F2 offspring had a 3:1 phenotypic ratio. On the basis of these results, Mendel postulated that each parent in the monohybrid cross contributed one of two paired unit factors to each offspring, and ...
... characteristics. Out of these crosses, all of the F1 offspring had the phenotype of one parent, and the F2 offspring had a 3:1 phenotypic ratio. On the basis of these results, Mendel postulated that each parent in the monohybrid cross contributed one of two paired unit factors to each offspring, and ...
Chapter 9: Introduction to Genetics
... • A century later, after passing through three generations, that mutation may have contributed to the overthrow of the Tsar and the emergence of communism in Russia. Victoria passed the gene on to some of her children and grandchildren, including Princess Alexandra, who married Nicholas II, Tsar of ...
... • A century later, after passing through three generations, that mutation may have contributed to the overthrow of the Tsar and the emergence of communism in Russia. Victoria passed the gene on to some of her children and grandchildren, including Princess Alexandra, who married Nicholas II, Tsar of ...
Multiple paternity and sporophytic inbreeding depression in
... occurrence of multiple sporophytes on individual female shoots. Young peatmoss sporophytes are surrounded by the perichaetial leaves of the female gametophyte and remain embedded for most of their life span. Unripe sporophytes are green and slowly turn black as they mature. In contrast to the majori ...
... occurrence of multiple sporophytes on individual female shoots. Young peatmoss sporophytes are surrounded by the perichaetial leaves of the female gametophyte and remain embedded for most of their life span. Unripe sporophytes are green and slowly turn black as they mature. In contrast to the majori ...
A worldwide correlation of lactase persistence phenotype and
... Background: The ability of adult humans to digest the milk sugar lactose - lactase persistence - is a dominant Mendelian trait that has been a subject of extensive genetic, medical and evolutionary research. Lactase persistence is common in people of European ancestry as well as some African, Middle ...
... Background: The ability of adult humans to digest the milk sugar lactose - lactase persistence - is a dominant Mendelian trait that has been a subject of extensive genetic, medical and evolutionary research. Lactase persistence is common in people of European ancestry as well as some African, Middle ...
Li Fraumeni Syndrome Summary - St. Jude Children`s Research
... genetic specialist checks the lettering (spelling) of the two copies of a gene to that of a normal sample. If there are differences, the specialist then decides if they might cause a specific disease, such as Li-Fraumeni syndrome. Please note that other methods may also be used, especially when the ...
... genetic specialist checks the lettering (spelling) of the two copies of a gene to that of a normal sample. If there are differences, the specialist then decides if they might cause a specific disease, such as Li-Fraumeni syndrome. Please note that other methods may also be used, especially when the ...
How might epigenetics contribute to ecological speciation?
... simulations to explore how phenotypic plasticity can influence the evolution of reproductive barriers during ecological speciation. They showed that adaptive plasticity evolves readily in the presence of dispersal between populations in different environments, and facilitates the colonization of hig ...
... simulations to explore how phenotypic plasticity can influence the evolution of reproductive barriers during ecological speciation. They showed that adaptive plasticity evolves readily in the presence of dispersal between populations in different environments, and facilitates the colonization of hig ...
Bacterial genospecies that are not ecologically
... [4– 6]. Alternatively, these clusters might reflect the underlying ecological niches provided by the environment, and this idea has been developed into the ecotype model, in which genotypic clusters map onto ecological niches and periodic selective sweeps purge genetic variation within each niche se ...
... [4– 6]. Alternatively, these clusters might reflect the underlying ecological niches provided by the environment, and this idea has been developed into the ecotype model, in which genotypic clusters map onto ecological niches and periodic selective sweeps purge genetic variation within each niche se ...
How might epigenetics contribute to ecological speciation?
... simulations to explore how phenotypic plasticity can influence the evolution of reproductive barriers during ecological speciation. They showed that adaptive plasticity evolves readily in the presence of dispersal between populations in different environments, and facilitates the colonization of hig ...
... simulations to explore how phenotypic plasticity can influence the evolution of reproductive barriers during ecological speciation. They showed that adaptive plasticity evolves readily in the presence of dispersal between populations in different environments, and facilitates the colonization of hig ...
rs6445975 SNPedia tehranchi
... than in men and include SNPs in the following genes: ITGAM, KIAA1542, PXK, FCGR2A, PTPN22 and STAT4. Additionally, SNPs in the HLA-DQA1 and IRF5 genes have been shown to have a protective phenotype in women of European ancestry but not Asian ancestry. Most of the GWA studies performed for SLE that h ...
... than in men and include SNPs in the following genes: ITGAM, KIAA1542, PXK, FCGR2A, PTPN22 and STAT4. Additionally, SNPs in the HLA-DQA1 and IRF5 genes have been shown to have a protective phenotype in women of European ancestry but not Asian ancestry. Most of the GWA studies performed for SLE that h ...
Generic Representation of Solid-Object Geometry for Genetic Search
... the design. Designs can be represented directly, such as lists of vertices and edges, or indirectly through equations (e.g. Parametric surfaces, or swept surfaces) (9),(13). For every one of these different phenotype representations, there will be a different genotype representation required, and of ...
... the design. Designs can be represented directly, such as lists of vertices and edges, or indirectly through equations (e.g. Parametric surfaces, or swept surfaces) (9),(13). For every one of these different phenotype representations, there will be a different genotype representation required, and of ...
Population genetics
Population genetics is the study of the distribution and change in frequency of alleles within populations, and as such it sits firmly within the field of evolutionary biology. The main processes of evolution (natural selection, genetic drift, gene flow, mutation, and genetic recombination) form an integral part of the theory that underpins population genetics. Studies in this branch of biology examine such phenomena as adaptation, speciation, population subdivision, and population structure.Population genetics was a vital ingredient in the emergence of the modern evolutionary synthesis. Its primary founders were Sewall Wright, J. B. S. Haldane and Ronald Fisher, who also laid the foundations for the related discipline of quantitative genetics.Traditionally a highly mathematical discipline, modern population genetics encompasses theoretical, lab and field work. Computational approaches, often utilising coalescent theory, have played a central role since the 1980s.