An investigation of sympatric speciation in diploid organisms by
... to use the `Biological Species Concept', which relies on reproductive isolation as evidence of speciation. ...
... to use the `Biological Species Concept', which relies on reproductive isolation as evidence of speciation. ...
How to Model Microevolution How to Model Microevolution
... Evolution is a change over time in the frequency of alleles or allele combinations in the gene pool, so any model of evolution must include at the minimum the passing of genetic material from one generation to the next. Hence, our fundamental time unit will be the transition between two consecutive ...
... Evolution is a change over time in the frequency of alleles or allele combinations in the gene pool, so any model of evolution must include at the minimum the passing of genetic material from one generation to the next. Hence, our fundamental time unit will be the transition between two consecutive ...
MINI - REVIEW Turner. B.C., D.D. Perkins
... during meiosis or by lowered recovery (through death or dysfunction) of meiotic products that do not carry the driven gene (reviewed by Zimmering et al. 1970). The latter mechanism is exemplified by Segregation distortion in Drosophila (reviewed by Sandler and Golic 1985), by transmission ratio dist ...
... during meiosis or by lowered recovery (through death or dysfunction) of meiotic products that do not carry the driven gene (reviewed by Zimmering et al. 1970). The latter mechanism is exemplified by Segregation distortion in Drosophila (reviewed by Sandler and Golic 1985), by transmission ratio dist ...
Regular Papers - Fungal Genetics Stock Center
... dow + /dow strains of opposite mating types. Of 30 progeny examined, 26 were dow -. These results indicated that Dp(D305) can indeed be lost in a cross. Ho wever for it to be “invisible” to the RIP machinery Dp(D305) would have to be lost premeiotically rather than in meiosis. To test whether such i ...
... dow + /dow strains of opposite mating types. Of 30 progeny examined, 26 were dow -. These results indicated that Dp(D305) can indeed be lost in a cross. Ho wever for it to be “invisible” to the RIP machinery Dp(D305) would have to be lost premeiotically rather than in meiosis. To test whether such i ...
1. Ackerman A 1943 (Experiments to increase the yield from spring
... Arbuzova VS 1994 Chromosome localization of genes Pp for purple grain pigmentation introgressed into common wheat. Genetika (Supplement) 30: 9. Arbuzova VS, Efremova TT, Laikova LI, Maystrenko OI, Popova OM & Pshenichnikova TA 1996 The development of precise genetic stocks in two wheat cultivars and ...
... Arbuzova VS 1994 Chromosome localization of genes Pp for purple grain pigmentation introgressed into common wheat. Genetika (Supplement) 30: 9. Arbuzova VS, Efremova TT, Laikova LI, Maystrenko OI, Popova OM & Pshenichnikova TA 1996 The development of precise genetic stocks in two wheat cultivars and ...
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... a. transmitted by a single pair of genes. b. uncommon in humans. c. transmitted by the mother. d. determined by two or more pairs of genes. ANS: D OBJ: 02-01 ...
... a. transmitted by a single pair of genes. b. uncommon in humans. c. transmitted by the mother. d. determined by two or more pairs of genes. ANS: D OBJ: 02-01 ...
Derivative Alleles of the Arabidopsis Gibberellin
... GAs and accumulate endogenous GA species to higher (rather than lower) levels than found in wild-type controls. The gai mutation, therefore, identifies a gene that modulates the response of plant cells to GA. We have mapped gai with respect to visible and restriction fragment length polymorphism (RF ...
... GAs and accumulate endogenous GA species to higher (rather than lower) levels than found in wild-type controls. The gai mutation, therefore, identifies a gene that modulates the response of plant cells to GA. We have mapped gai with respect to visible and restriction fragment length polymorphism (RF ...
Here - Orrery Software
... The Gallery of Tinker Bugs tab (TinkerBug Wizard) --------------------------------------------------------- 168 The Palmiter Genes tab (TinkerBug Wizard) ------------------------------------------------------------------ 169 The Regulatory Genes tab (TinkerBug Wizard) ------------------------------- ...
... The Gallery of Tinker Bugs tab (TinkerBug Wizard) --------------------------------------------------------- 168 The Palmiter Genes tab (TinkerBug Wizard) ------------------------------------------------------------------ 169 The Regulatory Genes tab (TinkerBug Wizard) ------------------------------- ...
Teeth Common Concerns FTNW
... not come through, it may be because it is in the wrong position or there is not enough room in the jaw. The developing tooth becomes impacted. It may be possible with surgery to free enough space for the tooth to come through. If it is not possible to remove other teeth to allow the impacted tooth t ...
... not come through, it may be because it is in the wrong position or there is not enough room in the jaw. The developing tooth becomes impacted. It may be possible with surgery to free enough space for the tooth to come through. If it is not possible to remove other teeth to allow the impacted tooth t ...
Neurospora Spore Killers Sk-2 and Sk
... located within the recombination block region, while mod(pr) is located just outside of it (Figure 1). We are interested in another seemingly unrelated ascus-dominant phenomenon called meiotic silencing by unpaired DNA (MSUD). If a copy of a gene is not properly paired with its homolog during propha ...
... located within the recombination block region, while mod(pr) is located just outside of it (Figure 1). We are interested in another seemingly unrelated ascus-dominant phenomenon called meiotic silencing by unpaired DNA (MSUD). If a copy of a gene is not properly paired with its homolog during propha ...
A Second Mechanism for Aluminum Resistance in Wheat Relies on
... 1978; Garvin and Carver, 2003; Stodart et al., 2007; Raman et al., 2008), but establishing the genetic basis for this variation has proved controversial. Reports are generally divided into those that propose a single gene model for resistance and those that argue two or more genes are involved. Thes ...
... 1978; Garvin and Carver, 2003; Stodart et al., 2007; Raman et al., 2008), but establishing the genetic basis for this variation has proved controversial. Reports are generally divided into those that propose a single gene model for resistance and those that argue two or more genes are involved. Thes ...
Modular Skeletal Evolution in Sticklebacks Is Controlled by Additive
... ABSTRACT Understanding the genetic architecture of evolutionary change remains a long-standing goal in biology. In vertebrates, skeletal evolution has contributed greatly to adaptation in body form and function in response to changing ecological variables like diet and predation. Here we use genome- ...
... ABSTRACT Understanding the genetic architecture of evolutionary change remains a long-standing goal in biology. In vertebrates, skeletal evolution has contributed greatly to adaptation in body form and function in response to changing ecological variables like diet and predation. Here we use genome- ...
Genetics fill in review
... Complete each sentence or statement. 1. A reproductive process in which fertilization occurs within a single plant is ____________________. 2. The transferring of pollen between plants is called ____________________. 3. Mendel produced strains of pea plants through the process of ___________________ ...
... Complete each sentence or statement. 1. A reproductive process in which fertilization occurs within a single plant is ____________________. 2. The transferring of pollen between plants is called ____________________. 3. Mendel produced strains of pea plants through the process of ___________________ ...
Standard PDF - Wiley Online Library
... The best understood special form of P. carinii, P. carinii formae specialis (f.sp.) carinii, appears to be haploid and contains about 8 million base pairs of DNA (8.5 fg) per nucleus. The genome of P. carinii f.sp. carinii is divided into 13^15 linear chromosomes that range from 300 to 700 kb in siz ...
... The best understood special form of P. carinii, P. carinii formae specialis (f.sp.) carinii, appears to be haploid and contains about 8 million base pairs of DNA (8.5 fg) per nucleus. The genome of P. carinii f.sp. carinii is divided into 13^15 linear chromosomes that range from 300 to 700 kb in siz ...
Observations on the New Rh Agglutinin Anti-f
... Articles on similar topics can be found in the following Blood collections Information about reproducing this article in parts or in its entirety may be found online at: ...
... Articles on similar topics can be found in the following Blood collections Information about reproducing this article in parts or in its entirety may be found online at: ...
Slides from Lecture 4
... • Alleles: The various settings (variants) of a gene • Genotype: The genome with all its alleles • Phenotype: The individual with all its traits, resulting from a given genotype. ...
... • Alleles: The various settings (variants) of a gene • Genotype: The genome with all its alleles • Phenotype: The individual with all its traits, resulting from a given genotype. ...
Genetic Characterization and Linkage Mapping of
... Table 1. Summary of net blotch resistance genes or major QTL (R2 > 0.50) mapped to barley chromosome 6H………………………………………………………………………………….66 Table 2. Marker name and chromosome location of polymorphic microsatellite markers identified using BSA and included for linkage analysis of the gene governing ne ...
... Table 1. Summary of net blotch resistance genes or major QTL (R2 > 0.50) mapped to barley chromosome 6H………………………………………………………………………………….66 Table 2. Marker name and chromosome location of polymorphic microsatellite markers identified using BSA and included for linkage analysis of the gene governing ne ...
About Neurofibromatosis 1 - Children`s Tumor Foundation
... tissue from the nervous system (neuro) and fibrous tissue (fibroma). There are two major types of neurofibromas. ...
... tissue from the nervous system (neuro) and fibrous tissue (fibroma). There are two major types of neurofibromas. ...
Children and Their Development, Second Canadian Edition Kail
... A) are more often caused by recessive alleles than by dominant alleles. B) are more often caused by dominant alleles than by recessive alleles. C) are due to dominant alleles about half the time. D) do not usually seriously impair a child’s development. Answer: A Page Reference: 50 Topic: Mechanisms ...
... A) are more often caused by recessive alleles than by dominant alleles. B) are more often caused by dominant alleles than by recessive alleles. C) are due to dominant alleles about half the time. D) do not usually seriously impair a child’s development. Answer: A Page Reference: 50 Topic: Mechanisms ...
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... A) are more often caused by recessive alleles than by dominant alleles. B) are more often caused by dominant alleles than by recessive alleles. C) are due to dominant alleles about half the time. D) do not usually seriously impair a child’s development. Answer: A Page Reference: 50 Topic: Mechanisms ...
... A) are more often caused by recessive alleles than by dominant alleles. B) are more often caused by dominant alleles than by recessive alleles. C) are due to dominant alleles about half the time. D) do not usually seriously impair a child’s development. Answer: A Page Reference: 50 Topic: Mechanisms ...
Genetic analysis of root-knot nematode resistance in potato
... Because most of the 2n-pollen is generated via FDR, and because the selection for 2n-pollen is less laborious than the selection for 2n-eggs, the recovery of the tetraploid level is preferred by means of 4x.2x crosses. Besides the direct gene transfer and more efficient breeding, the use of diploid ...
... Because most of the 2n-pollen is generated via FDR, and because the selection for 2n-pollen is less laborious than the selection for 2n-eggs, the recovery of the tetraploid level is preferred by means of 4x.2x crosses. Besides the direct gene transfer and more efficient breeding, the use of diploid ...
THE GENETICS OF CURLY WING IN DROSOPHILA. ANOTHER
... the curlycharacterwith an ever-decreasing proportion of the normalwinged type, a 100-percent stock of curly flies was obtained. No normal flies appeared after that until July, 1921. Investigation of the apparently normal individuals which appeared at that time demonstrated the wild type t o be only ...
... the curlycharacterwith an ever-decreasing proportion of the normalwinged type, a 100-percent stock of curly flies was obtained. No normal flies appeared after that until July, 1921. Investigation of the apparently normal individuals which appeared at that time demonstrated the wild type t o be only ...
Polyploid
Polyploid cells and organisms are those containing more than two paired (homologous) sets of chromosomes. Most species whose cells have nuclei (Eukaryotes) are diploid, meaning they have two sets of chromosomes—one set inherited from each parent. However, polyploidy is found in some organisms and is especially common in plants. In addition, polyploidy occurs in some tissues of animals that are otherwise diploid, such as human muscle tissues. This is known as endopolyploidy. Species whose cells do not have nuclei, that is, Prokaryotes, may be polyploid organisms, as seen in the large bacterium Epulopicium fishelsoni [1]. Hence ploidy is defined with respect to a cell. Most eukaryotes have diploid somatic cells, but produce haploid gametes (eggs and sperm) by meiosis. A monoploid has only one set of chromosomes, and the term is usually only applied to cells or organisms that are normally diploid. Male bees and other Hymenoptera, for example, are monoploid. Unlike animals, plants and multicellular algae have life cycles with two alternating multicellular generations. The gametophyte generation is haploid, and produces gametes by mitosis, the sporophyte generation is diploid and produces spores by meiosis.Polyploidy refers to a numerical change in a whole set of chromosomes. Organisms in which a particular chromosome, or chromosome segment, is under- or overrepresented are said to be aneuploid (from the Greek words meaning ""not"", ""good"", and ""fold""). Therefore the distinction between aneuploidy and polyploidy is that aneuploidy refers to a numerical change in part of the chromosome set, whereas polyploidy refers to a numerical change in the whole set of chromosomes.Polyploidy may occur due to abnormal cell division, either during mitosis, or commonly during metaphase I in meiosis.Polyploidy occurs in some animals, such as goldfish, salmon, and salamanders, but is especially common among ferns and flowering plants (see Hibiscus rosa-sinensis), including both wild and cultivated species. Wheat, for example, after millennia of hybridization and modification by humans, has strains that are diploid (two sets of chromosomes), tetraploid (four sets of chromosomes) with the common name of durum or macaroni wheat, and hexaploid (six sets of chromosomes) with the common name of bread wheat. Many agriculturally important plants of the genus Brassica are also tetraploids.Polyploidy can be induced in plants and cell cultures by some chemicals: the best known is colchicine, which can result in chromosome doubling, though its use may have other less obvious consequences as well. Oryzalin will also double the existing chromosome content.