
Arabidopsis Cell Division Cycle 20.1 Is Required for Normal Meiotic
... However, both mutant plants had greatly reduced fertility with obviously short siliques (Figure 1A), whereas heterozygous plants showed normal fertility, indicating that the mutations are recessive. Progeny of plants heterozygous for either mutant allele segregated mutant and normal phenotypes in a ...
... However, both mutant plants had greatly reduced fertility with obviously short siliques (Figure 1A), whereas heterozygous plants showed normal fertility, indicating that the mutations are recessive. Progeny of plants heterozygous for either mutant allele segregated mutant and normal phenotypes in a ...
PCTpc201500834rar1_pap_plantcell 1..16
... However, both mutant plants had greatly reduced fertility with obviously short siliques (Figure 1A), whereas heterozygous plants showed normal fertility, indicating that the mutations are recessive. Progeny of plants heterozygous for either mutant allele segregated mutant and normal phenotypes in a ...
... However, both mutant plants had greatly reduced fertility with obviously short siliques (Figure 1A), whereas heterozygous plants showed normal fertility, indicating that the mutations are recessive. Progeny of plants heterozygous for either mutant allele segregated mutant and normal phenotypes in a ...
PCTpc201500834rar1_pap_plantcell 1..16
... However, both mutant plants had greatly reduced fertility with obviously short siliques (Figure 1A), whereas heterozygous plants showed normal fertility, indicating that the mutations are recessive. Progeny of plants heterozygous for either mutant allele segregated mutant and normal phenotypes in a ...
... However, both mutant plants had greatly reduced fertility with obviously short siliques (Figure 1A), whereas heterozygous plants showed normal fertility, indicating that the mutations are recessive. Progeny of plants heterozygous for either mutant allele segregated mutant and normal phenotypes in a ...
Mutational Analysis of the Drosophila Sister-Chromatid
... between mitotic and meiotic cohesion mechanisms. During meiosis, in addition to ensuring proper disjunction of sister chromatids, cohesion also may serve to modulate homologue association and segregation. In most systems, reciprocal exchange between homologues is necessary to achieve proper segregat ...
... between mitotic and meiotic cohesion mechanisms. During meiosis, in addition to ensuring proper disjunction of sister chromatids, cohesion also may serve to modulate homologue association and segregation. In most systems, reciprocal exchange between homologues is necessary to achieve proper segregat ...
Genetics Practice Test
... ____ 31. Animal breeders maintain cat and dog breeds by the process of hybridization. _________________________ ____ 32. Native Americans took teosine and used selective breeding to make corn, a more productive and nutritious plant. _________________________ ____ 33. Exposing bacteria to radiation o ...
... ____ 31. Animal breeders maintain cat and dog breeds by the process of hybridization. _________________________ ____ 32. Native Americans took teosine and used selective breeding to make corn, a more productive and nutritious plant. _________________________ ____ 33. Exposing bacteria to radiation o ...
Consistency analysis of redundant probe sets on Affymetrix three
... and these arrays continue to be used in individual labs as well as larger-scale projects, such as the Cancer Genome Atlas [1]. Exon arrays were developed more recently and have been marketed as being able to quantify changes in alternative splicing. Many groups have reported success using exon array ...
... and these arrays continue to be used in individual labs as well as larger-scale projects, such as the Cancer Genome Atlas [1]. Exon arrays were developed more recently and have been marketed as being able to quantify changes in alternative splicing. Many groups have reported success using exon array ...
Mitotic Spindle Assembly by Two Different Pathways in Vitro
... 1 mM MgCI2, 150 rnM sucrose, 10 #g/ml cytochalasin D) (Murray and Kirschner, 1989a) to a concentration of"~l,000 nuclei//~l, and this dilution was added to extracts on ice at a 1:10 dilution. In all cases sperm was added to extracts immediately before use; when mitotic extracts were activated into i ...
... 1 mM MgCI2, 150 rnM sucrose, 10 #g/ml cytochalasin D) (Murray and Kirschner, 1989a) to a concentration of"~l,000 nuclei//~l, and this dilution was added to extracts on ice at a 1:10 dilution. In all cases sperm was added to extracts immediately before use; when mitotic extracts were activated into i ...
a complex voyage to the X chromosome
... accompanied by a twofold upregulation in the expression of the X chromosome(s) in both sexes, thereby restoring the balance between the X chromosome and autosomes (Gupta et al., 2006; Nguyen and Disteche, 2006). Even though the individual strategies differ, the dosage compensation machineries in the ...
... accompanied by a twofold upregulation in the expression of the X chromosome(s) in both sexes, thereby restoring the balance between the X chromosome and autosomes (Gupta et al., 2006; Nguyen and Disteche, 2006). Even though the individual strategies differ, the dosage compensation machineries in the ...
genetic variability, twin hybrids and constant hybrids, in a case of
... the beaded stock, and this factor proved by its linkage relations to lie in the second chromosome. Hence there are at least two pairs of factors concerned in the character beaded, one chief factor in chromosome 111, and one accessory factor in chromosome 11. Two of the four postulates which I have s ...
... the beaded stock, and this factor proved by its linkage relations to lie in the second chromosome. Hence there are at least two pairs of factors concerned in the character beaded, one chief factor in chromosome 111, and one accessory factor in chromosome 11. Two of the four postulates which I have s ...
Mendelian Genetics
... Using pea plants, found indirect but observable evidence of how parents transmit genes to offspring ...
... Using pea plants, found indirect but observable evidence of how parents transmit genes to offspring ...
Quantitative trait loci affecting amylose, amylopectin and starch
... several QTLs for two traits is very low, except if they rely on common genetic determinants. Examination of the parental allele effects showed that favourable effects over the 2 years are well balanced between Io and F-2, eleven vs. thirteen, respectively, when pooling all traits and both methods (t ...
... several QTLs for two traits is very low, except if they rely on common genetic determinants. Examination of the parental allele effects showed that favourable effects over the 2 years are well balanced between Io and F-2, eleven vs. thirteen, respectively, when pooling all traits and both methods (t ...
The-NOS-problem
... They further supported that one of these mutants, which they called NOSC (actually dNOSC), had a homozygous lethal allele of NOS (and thus that NOS is essential) by doing the following: o They backcrossed 5 times and found that NOSC still had lethality, indicating that the lethality is not due to a ...
... They further supported that one of these mutants, which they called NOSC (actually dNOSC), had a homozygous lethal allele of NOS (and thus that NOS is essential) by doing the following: o They backcrossed 5 times and found that NOSC still had lethality, indicating that the lethality is not due to a ...
Neurospora tetrasperma crosses heterozygous for hybrid
... can either be of opposite mating types (i.e. [mat A + mat a]) or of the same mating type (figure 2). Het1-type progeny with nuclei of the same mating type can be generated by a crossover proximal to a translocation breakpoint, such that the mat locus undergoes first-division segregation, whereas the ...
... can either be of opposite mating types (i.e. [mat A + mat a]) or of the same mating type (figure 2). Het1-type progeny with nuclei of the same mating type can be generated by a crossover proximal to a translocation breakpoint, such that the mat locus undergoes first-division segregation, whereas the ...
Genetic characterizations of three male-steriles in wheat, Triticum aestivum L.
... Male-sterility provides a quick and easy way to formulate genetic recombination in wheat. The inheritance and chromosome involvement of two spontaneous male-sterile mutants in 'Siete Cerros' spring wheat and a single gene male-sterile in 'Chancellor' winter wheat were studied. Chi square analyses of ...
... Male-sterility provides a quick and easy way to formulate genetic recombination in wheat. The inheritance and chromosome involvement of two spontaneous male-sterile mutants in 'Siete Cerros' spring wheat and a single gene male-sterile in 'Chancellor' winter wheat were studied. Chi square analyses of ...
Selective Disruption of Aurora C Kinase Reveals Distinct Functions
... Introduction Haploid gametes are generated by meiosis, a unique cell division process that consists of a single round of DNA replication followed by two successive cell divisions. In the first division, meiosis I (MI), homologous chromosomes segregate. The second division, meiosis II (MII), is more ...
... Introduction Haploid gametes are generated by meiosis, a unique cell division process that consists of a single round of DNA replication followed by two successive cell divisions. In the first division, meiosis I (MI), homologous chromosomes segregate. The second division, meiosis II (MII), is more ...
The female-killing chromosome of the silkworm, Bombyx mori, was
... feminizing gene (Fem) on the W chromosome. The paternally transmitted mutant W chromosome, Df(pSa+pW+od)Fem, derived from the translocation-carrying W chromosome (pSa+pW+od), is inert as femaleness determinant. Moreover, this Df(pSa+pW+od)Fem chromosome has been thought to have a female-killing fact ...
... feminizing gene (Fem) on the W chromosome. The paternally transmitted mutant W chromosome, Df(pSa+pW+od)Fem, derived from the translocation-carrying W chromosome (pSa+pW+od), is inert as femaleness determinant. Moreover, this Df(pSa+pW+od)Fem chromosome has been thought to have a female-killing fact ...
Revisiting the Impact of Inversions in Evolution
... Flores et al. (2007) focused on identical repeats located in reverse orientation to locate three chromosomal inversions in somatic human tissue. Inversions that segregate as polymorphisms can be large; common inversions in Drosophila can cover a substantial part of a chromosome arm and might be arou ...
... Flores et al. (2007) focused on identical repeats located in reverse orientation to locate three chromosomal inversions in somatic human tissue. Inversions that segregate as polymorphisms can be large; common inversions in Drosophila can cover a substantial part of a chromosome arm and might be arou ...
Variability of polyphenol oxidase (PPO) alleles located on
... 158 and Huaimai 18, possibly due to the similar genetic background of this population. However, in this population, the alleles of PPO genes on chromosome 2AL detected by marker PPO 18 were classified into three types: PPO-2Aa/2Aa, PPO-2Aa/2Ab, and PPO-2Ab/2Ab, with gene frequencies of 65%, 15.3%, a ...
... 158 and Huaimai 18, possibly due to the similar genetic background of this population. However, in this population, the alleles of PPO genes on chromosome 2AL detected by marker PPO 18 were classified into three types: PPO-2Aa/2Aa, PPO-2Aa/2Ab, and PPO-2Ab/2Ab, with gene frequencies of 65%, 15.3%, a ...
Persistence and Loss of Meiotic Recombination
... allele or even to slow its rate of loss. The model, however, assumed an infinitely large population, whereas many of the benefits of genetic recombination are thought to derive from the stochastic nature of events in small populations (Otto and Barton 2001). The model also considered only chromosome ...
... allele or even to slow its rate of loss. The model, however, assumed an infinitely large population, whereas many of the benefits of genetic recombination are thought to derive from the stochastic nature of events in small populations (Otto and Barton 2001). The model also considered only chromosome ...
IBS Methods for Affected Pairs Linkage
... • Unselected pairs • Unaffected pairs • Discordant pairs ...
... • Unselected pairs • Unaffected pairs • Discordant pairs ...
List of references - UC Davis Plant Sciences
... of crop plants by marker-trait association: A case study for potatoes with quantitative variation of resistance to late blight and maturity type. ...
... of crop plants by marker-trait association: A case study for potatoes with quantitative variation of resistance to late blight and maturity type. ...
Having sex, yes, but with whom? Inferences from fungi
... mating type restrictions on syngamy? The most problematic case, with the existence of two gamete classes, appears paradoxically the most frequent among eukaryotes (male and female, or two mating types). Any new rare gamete class, being compatible with all other existing classes, should be selected f ...
... mating type restrictions on syngamy? The most problematic case, with the existence of two gamete classes, appears paradoxically the most frequent among eukaryotes (male and female, or two mating types). Any new rare gamete class, being compatible with all other existing classes, should be selected f ...
Having sex, yes, but with whom? Inferences from fungi on the
... mating type restrictions on syngamy? The most problematic case, with the existence of two gamete classes, appears paradoxically the most frequent among eukaryotes (male and female, or two mating types). Any new rare gamete class, being compatible with all other existing classes, should be selected f ...
... mating type restrictions on syngamy? The most problematic case, with the existence of two gamete classes, appears paradoxically the most frequent among eukaryotes (male and female, or two mating types). Any new rare gamete class, being compatible with all other existing classes, should be selected f ...
Good quality blastocyst from non-/mono
... events [Scott et al. 2007]. Another study indicated that there was a significant positive relationship between the cell numbers of embryos on D2 and D3 and blastocyst development [Neuber et al. 2003]. Therefore, we believe that the incidence of blastocysts with normal chromosomal composition is high ...
... events [Scott et al. 2007]. Another study indicated that there was a significant positive relationship between the cell numbers of embryos on D2 and D3 and blastocyst development [Neuber et al. 2003]. Therefore, we believe that the incidence of blastocysts with normal chromosomal composition is high ...
Ploidy
Ploidy is the number of sets of chromosomes in a cell. Usually a gamete (sperm or egg, which fuse into a single cell during the fertilization phase of sexual reproduction) carries a full set of chromosomes that includes a single copy of each chromosome, as aneuploidy generally leads to severe genetic disease in the offspring. The gametic or haploid number (n) is the number of chromosomes in a gamete. Two gametes form a diploid zygote with twice this number (2n, the zygotic or diploid number) i.e. two copies of autosomal chromosomes. For humans, a diploid species, n = 23. A typical human somatic cell contains 46 chromosomes: 2 complete haploid sets, which make up 23 homologous chromosome pairs.Because chromosome number is generally reduced only by the specialized process of meiosis, the somatic cells of the body inherit and maintain the chromosome number of the zygote. However, in many situations somatic cells double their copy number by means of endoreduplication as an aspect of cellular differentiation. For example, the hearts of two-year-old children contain 85% diploid and 15% tetraploid nuclei, but by 12 years of age the proportions become approximately equal, and adults examined contained 27% diploid, 71% tetraploid and 2% octaploid nuclei.Cells are described according to the number of sets present (the ploidy level): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is frequently used to describe cells with three or more sets of chromosomes (triploid or higher ploidy).