Leaf anatomical study of taxons Salvia nemorosa subsp. tesquicola
... bifacial (S. nemorosa subsp. tesquicola and hybrid) and S. nutans ecvifacial. Numerous glandular and non-glandular trichomes (hairs) were present, different in structure, shape and size. Stomata were found on both upper and lower epidermis of the blade and were of the diacytic type, impressing, with ...
... bifacial (S. nemorosa subsp. tesquicola and hybrid) and S. nutans ecvifacial. Numerous glandular and non-glandular trichomes (hairs) were present, different in structure, shape and size. Stomata were found on both upper and lower epidermis of the blade and were of the diacytic type, impressing, with ...
Printable version - Chromosome 18 Registry and Research Society
... This diagram depicts the structure of a chromosome. What looks like squatty little things under a microscope are actually very long linear chemical structures that have been precisely packaged. The chemical structure called DNA is shown in red and blue. This is the DNA double helix. The pairs of blu ...
... This diagram depicts the structure of a chromosome. What looks like squatty little things under a microscope are actually very long linear chemical structures that have been precisely packaged. The chemical structure called DNA is shown in red and blue. This is the DNA double helix. The pairs of blu ...
Chromosomal Basis of Inherited Disorders
... An individual with the appropriate number of chromosomes for their species is called euploidy corresponds to 22 pairs of autosomes and one pair of sex chromosomes. ...
... An individual with the appropriate number of chromosomes for their species is called euploidy corresponds to 22 pairs of autosomes and one pair of sex chromosomes. ...
Inheritance of some Flower Traits in Patch Petal
... for cultivar improvement of the genus. The trait was obtained from somaclonal variances of both cutflower and potted plant cultivars. Most of the variance is male-sterile. Hybrids between the variants and the wild-type cultivars yielded some progenies with patch petals. Genetic analysis on the inher ...
... for cultivar improvement of the genus. The trait was obtained from somaclonal variances of both cutflower and potted plant cultivars. Most of the variance is male-sterile. Hybrids between the variants and the wild-type cultivars yielded some progenies with patch petals. Genetic analysis on the inher ...
MEIOSIS I
... Inheritance of Genes Genes are the units of heredity and are made up of segments of DNA Genes are passed to the next generation via reproductive cells called gametes (sperm and eggs) ...
... Inheritance of Genes Genes are the units of heredity and are made up of segments of DNA Genes are passed to the next generation via reproductive cells called gametes (sperm and eggs) ...
NEOPOLYPLOIDY IN FLOWERING PLANTS
... Induced neopolyploids, which are formed by somatic doubling, may also be less heterozygous than spontaneous neopolyploids, which are hypothesized to arise primarily via unreduced gametes (see Bretagnolle & Thompson 1995). The origin of all surveyed polyploids is documented in Web Tables. Finally, na ...
... Induced neopolyploids, which are formed by somatic doubling, may also be less heterozygous than spontaneous neopolyploids, which are hypothesized to arise primarily via unreduced gametes (see Bretagnolle & Thompson 1995). The origin of all surveyed polyploids is documented in Web Tables. Finally, na ...
Monday, November 17, 2014 Agenda: Cell Organelle Analogy
... • Intimate contact provides route for infection by parasites (AIDS, syphillis, etc.) • Genetic costs: in sex, we pass on only half of genes to offspring. • Males are an expensive luxury - in most species they contribute little to rearing offspring. ...
... • Intimate contact provides route for infection by parasites (AIDS, syphillis, etc.) • Genetic costs: in sex, we pass on only half of genes to offspring. • Males are an expensive luxury - in most species they contribute little to rearing offspring. ...
Punnett Squares
... Tall plants can have green or yellow seeds So the inheritance of one does not affect the inheritance of the other. Mendel noticed this with all the traits he studied ...
... Tall plants can have green or yellow seeds So the inheritance of one does not affect the inheritance of the other. Mendel noticed this with all the traits he studied ...
BIOTECHNOLOGY AND MOLECULAR
... Tulip is ranked third among the top ten flowers sold worldwide (Podwyszynska and Sochacki, 2010), being extremely popular for landscaping, but also as garden plants and cut flowers. Due to the constant or even increasing interest for this flower species, continuous and consistent efforts have been m ...
... Tulip is ranked third among the top ten flowers sold worldwide (Podwyszynska and Sochacki, 2010), being extremely popular for landscaping, but also as garden plants and cut flowers. Due to the constant or even increasing interest for this flower species, continuous and consistent efforts have been m ...
Chromosome structure and mutations
... Failure of chromosomes to separate into two daughter cells during mitosis in diploid Cross between tetraploid and diploid creates triploids – new species, autopolyploids ...
... Failure of chromosomes to separate into two daughter cells during mitosis in diploid Cross between tetraploid and diploid creates triploids – new species, autopolyploids ...
genetic load and soft selection in ferns
... spores produced by many species of these plants can be germinated readily and grown on sterile, defined, agar-solidified medium. These germinated spores grow into hermaphroditic gametophytes, bearing egg-containing ...
... spores produced by many species of these plants can be germinated readily and grown on sterile, defined, agar-solidified medium. These germinated spores grow into hermaphroditic gametophytes, bearing egg-containing ...
Plant speciation through chromosome instability and ploidy change
... Autopolyploidy: Presence of three or more sets of homologous chromosomes or chromosomes from the same origin within a single cell or organism. Allopolyploidy: Presence of three or more sets of chromosomes from at least two different species origins. Bivalents: Pairs of parental chromosomes physicall ...
... Autopolyploidy: Presence of three or more sets of homologous chromosomes or chromosomes from the same origin within a single cell or organism. Allopolyploidy: Presence of three or more sets of chromosomes from at least two different species origins. Bivalents: Pairs of parental chromosomes physicall ...
11-2
... quantities follow the laws of probability. Predict If you crossed dominant allele. About 1/4 showed the trait a TT plant with a Tt plant, would the offspring be tall or short? controlled by the recessive allele. Segregation did occur according to Mendel’s model. As you can see in the F2 generation, ...
... quantities follow the laws of probability. Predict If you crossed dominant allele. About 1/4 showed the trait a TT plant with a Tt plant, would the offspring be tall or short? controlled by the recessive allele. Segregation did occur according to Mendel’s model. As you can see in the F2 generation, ...
As I said, Gregor Mendel found a basic rule of
... Mendel found F1 generation by cross-‐fertilizing two purebred flowers. It is also called hybrid or heterozygous because it has two different alleles. For plants, the allele is purple form or white form ...
... Mendel found F1 generation by cross-‐fertilizing two purebred flowers. It is also called hybrid or heterozygous because it has two different alleles. For plants, the allele is purple form or white form ...
an overview of the genetic algorithm and its use for finding extrema
... with the field of evolutionary computation on a general level, a few illustrative examples written in MATLAB can make this article interesting as a step further toward the practical use of genetic algorithms — possibly also for their own problems. On the other hand, for the huge group of MATLAB user ...
... with the field of evolutionary computation on a general level, a few illustrative examples written in MATLAB can make this article interesting as a step further toward the practical use of genetic algorithms — possibly also for their own problems. On the other hand, for the huge group of MATLAB user ...
Mendel & Heredity
... and he noticed the same about certain short plants He called these plants true-breeding Mendel took a truebreeding tall stem plant and crossed it with a true-breeding short stem ...
... and he noticed the same about certain short plants He called these plants true-breeding Mendel took a truebreeding tall stem plant and crossed it with a true-breeding short stem ...
nosil vines funk 2005 evolution
... Abstract. The classification of reproductive isolating barriers laid out by Dobzhansky and Mayr has motivated and structured decades of research on speciation. We argue, however, that this classification is incomplete and that the unique contributions of a major source of reproductive isolation have ...
... Abstract. The classification of reproductive isolating barriers laid out by Dobzhansky and Mayr has motivated and structured decades of research on speciation. We argue, however, that this classification is incomplete and that the unique contributions of a major source of reproductive isolation have ...
Chromosomal Mutations - Virtual Learning Environment
... defective region must have arisen in a gamete and may depend on knowing which genes are involved. An adult can be heterozygous for an inversion and be healthy, but have reproductive problems. It was reported that a woman had an inversion in the long arm of chromosome 15, due to which she had two spo ...
... defective region must have arisen in a gamete and may depend on knowing which genes are involved. An adult can be heterozygous for an inversion and be healthy, but have reproductive problems. It was reported that a woman had an inversion in the long arm of chromosome 15, due to which she had two spo ...
heredity and variation
... never quite perfect. Among the progeny of certain wheat plants appear one or a few not quite the same as the parent, but markedly superior. From these descend a new variety. which represents so great an improvement that it soon displaces all other wheat varieties and changes the whole agriculture of ...
... never quite perfect. Among the progeny of certain wheat plants appear one or a few not quite the same as the parent, but markedly superior. From these descend a new variety. which represents so great an improvement that it soon displaces all other wheat varieties and changes the whole agriculture of ...
ws: Bikini Bottom Genetics
... c. What are possible genotypes of the offspring they would produce? ___________________ d. What is the possible phenotypes of the offspring they would produce? ____________________ e. Did the hospital make a mistake? Explain your answer. ...
... c. What are possible genotypes of the offspring they would produce? ___________________ d. What is the possible phenotypes of the offspring they would produce? ____________________ e. Did the hospital make a mistake? Explain your answer. ...
Supplemental Table 1. Empirical evidence for genes as leaders and
... morph is a plastic trait, with a shift from green morph types to black and yellow morphs triggered by physical contact and other cues of local crowding [14, 15]. In contrast, similar colour patterns are largely genetically determined in two species [16] belonging to subfamilies closely related to th ...
... morph is a plastic trait, with a shift from green morph types to black and yellow morphs triggered by physical contact and other cues of local crowding [14, 15]. In contrast, similar colour patterns are largely genetically determined in two species [16] belonging to subfamilies closely related to th ...
Chapter 5
... a true-breeding plant with purple flowers and a true-breeding plant with white flowers, the hybrid offspring had only purple flowers. Mendel hypothesized that the hybrid offspring had one genetic factor for purple flowers and one genetic factor for white flowers. But why were there no white flowers? ...
... a true-breeding plant with purple flowers and a true-breeding plant with white flowers, the hybrid offspring had only purple flowers. Mendel hypothesized that the hybrid offspring had one genetic factor for purple flowers and one genetic factor for white flowers. But why were there no white flowers? ...
5.1.2 Meiosis and Variation
... in seahorses is known as disruptive selection. This is where the extreme phenotypes are more likely to survive and reproduce than the intermediate phenotypes. (b) ...
... in seahorses is known as disruptive selection. This is where the extreme phenotypes are more likely to survive and reproduce than the intermediate phenotypes. (b) ...
Full Text
... protein sequences. For each pair of plant species (P1, P2) and each type of sequence (DNA, protein), four BLAST runs are executed: P1 against P2, P2 against P1, P1 against P1, and P2 against P2. The first two BLAST output files are used for orthology prediction, while the last two are used for the d ...
... protein sequences. For each pair of plant species (P1, P2) and each type of sequence (DNA, protein), four BLAST runs are executed: P1 against P2, P2 against P1, P1 against P1, and P2 against P2. The first two BLAST output files are used for orthology prediction, while the last two are used for the d ...
Hybrid (biology)
In biology a hybrid, also known as cross breed, is the result of mixing, through sexual reproduction, two animals or plants of different breeds, varieties, species or genera. Using genetic terminology, it may be defined as follows. Hybrid generally refers to any offspring resulting from the breeding of two genetically distinct individuals, which usually will result in a high degree of heterozygosity, though hybrid and heterozygous are not, strictly speaking, synonymous. a genetic hybrid carries two different alleles of the same gene a structural hybrid results from the fusion of gametes that have differing structure in at least one chromosome, as a result of structural abnormalities a numerical hybrid results from the fusion of gametes having different haploid numbers of chromosomes a permanent hybrid is a situation where only the heterozygous genotype occurs, because all homozygous combinations are lethal.From a taxonomic perspective, hybrid refers to: Offspring resulting from the interbreeding between two animal species or plant species. See also hybrid speciation. Hybrids between different subspecies within a species (such as between the Bengal tiger and Siberian tiger) are known as intra-specific hybrids. Hybrids between different species within the same genus (such as between lions and tigers) are sometimes known as interspecific hybrids or crosses. Hybrids between different genera (such as between sheep and goats) are known as intergeneric hybrids. Extremely rare interfamilial hybrids have been known to occur (such as the guineafowl hybrids). No interordinal (between different orders) animal hybrids are known. The third type of hybrid consists of crosses between populations, breeds or cultivars within a single species. This meaning is often used in plant and animal breeding, where hybrids are commonly produced and selected, because they have desirable characteristics not found or inconsistently present in the parent individuals or populations.↑ ↑ ↑ ↑