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The basic number of chromosomes in a polyploid series, monoploid/haploid = x; diploid = 2x; triploid = 3x; etc.
- Browse Related Terms: allosome, autosome, Barr body, embryo sexing, Hemizygous, semen sexing, sex linkage, x, X-chromosome, Y chromosome
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See: sex chromosome.
- Browse Related Terms: allosome, autosome, Barr body, embryo sexing, Hemizygous, semen sexing, sex linkage, x, X-chromosome, Y chromosome
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The presence of a gene on the X-chromosome.
- Browse Related Terms: balanced lethal system, chromomeres, chromonema, chromosome banding, chromosome mutation, compound chromosome, endomitosis, endoreduplication, fluorescence in situ hybridization, gene insertion, gene replacement, genome, hybrid dysgenesis, Independent assortment, jumping library, karyogram, lampbrush chromosome, locus, Locus (plural = loci), meiotic drive, paternal, polymorphism, Restriction fragment length polymorphism (RFLP), tetrasomic, walking, X-linked, zoo FISH
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A genetic disease caused by a mutation on the X chromosome. In X-linked recessive conditions, a normal female "carrier" passes on the mutated X chromosome to an affected son.
A genetic disease caused by an allele at a locus on the X-chromosome.
- Browse Related Terms: amorph, back mutation, cis heterozygote, cryptic, Darwinian cloning, Deletion, down promoter mutation, genetic disease, hemophilia, heteroallele, hypomorph, Irradiation, mutable gene, Mutation, mutation pressure, neutral mutation, neutral theory, Point mutation, Recessive gene, silent mutation, Site-directed mutagenesis, somatic hypermutation, spontaneous mutation, trans heterozygote, X-linked disease
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The diffraction pattern of X-rays passing through a pure crystal of a substance.
- Browse Related Terms: assay, bio-assay, catalysis, detergent, dimethyl sulphoxide, distillation, micro-encapsulation, mycotoxin, pathotoxin, polysaccharide capsule, pyrogen, secondary metabolism, TSCA, X-ray crystallography
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A yellow oxygen-containing carotenoid, present in chloroplasts.
- Browse Related Terms: carotene, carotenoid, chlorophyll, chromoplast, exogenous, granum, Pseudomonas spp., xanthophyll
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The immediate effect of pollen on some characters of the endosperm.
- Browse Related Terms: anther, anthesis, cross pollination, cytoplasmic male sterility, dehiscence, double fertilization, gametophyte, generative nucleus, microgametophyte, microspore, pollen culture, pollen grain, pollination, SEED, self-incompatibility, Self-pollination, sporangium, stigma, style, xenia
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A chemical compound that is not produced by, and often cannot be degraded by, living organisms.
- Browse Related Terms: Abiotic, bio-, bio-energetics, Bioconversion, biodiversity, Biomass, biopolymer, Biosphere, Biotechnology, Biotechnology-derived, biotic factor, Biotic stress, catabolism, chemical mutagen, Ecosystem, Endophyte, in vivo, in vivo gene therapy, infection, living modified organism, LMO, metabolism, microtubule, Molecular biology, nitrogen assimilation, parasite, primary cell, quarantine, viability, vitamin, xenobiotic
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Refers to organ s, genetically engineered ("humanized") todecrease the chance of rejection, that have been grown in an animal of another species for potential transplant to humans.
- Browse Related Terms: allogenic, ex vitro, generally regarded as safe, graft-versus-host disease, immunosuppression, porcine endogenous retrovirus, therapeutic cloning, xenogeneic, xenotransplantation
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Transplantation of cells, tissues, or organs from one species to another.
The transplantation of tissue or organs from one species to another species, typically from pigs to humans. Zoonoses are an important issue.
- Browse Related Terms: allogenic, ex vitro, generally regarded as safe, graft-versus-host disease, immunosuppression, porcine endogenous retrovirus, therapeutic cloning, xenogeneic, xenotransplantation
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A plant very resistant to drought, typically adapted to extremely dry environments.
- Browse Related Terms: Abiotic stress, co-evolution, glycoalkaloids, halophyte, nitrification, Nitrogen fixation, salt tolerance, soil amelioration, soil-less culture, thermophile, water potential, xerophyte
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A complex tissue specialized for the conduction of water and mineral nutrients in solution. Xylem may also function as a supporting tissue, particularly secondary xylem.
- Browse Related Terms: activated charcoal, dispense, ethanol, iso-osmotic, isotonic, nodular, nutrient film technique, osmosis, osmotic potential, stock solution, xylem