English > genetics: 1 sense > noun 1, cognitionMeaning | The branch of biology that studies heredity and variation in organisms. |
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Synonym | genetic science |
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Category of | Mendel's law | (genetics) one of two principles of heredity formulated by Gregor Mendel on the basis of his experiments with plants |
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XX | (genetics) normal complement of sex chromosomes in a female |
XXX | (genetics) abnormal complement of three X chromosomes in a female |
XXY | (genetics) abnormal complement of sex hormones in a male resulting in Klinefelter's syndrome |
XY | (genetics) normal complement of sex hormones in a male |
XYY | (genetics) abnormal complement of sex hormones in a male who has two Y chromosomes |
allele, allelomorph | (genetics) either of a pair (or series) of alternative forms of a gene that can occupy the same locus on a particular chromosome and that control the same character |
amphidiploid | (genetics) an organism or cell having a diploid set of chromosomes from each parent |
bivalent, double | Used of homologous chromosomes associated in pairs in synapsis |
carrier | (genetics) an organism that possesses a recessive gene whose effect is masked by a dominant allele |
character | (genetics) an attribute (structural or functional) that is determined by a gene or group of genes |
cosmid | (genetics) a large vector that is made from a bacteriophage and used to clone genes or gene fragments |
deletion | (genetics) the loss or absence of one or more nucleotides from a chromosome |
diploid | Of a cell or organism having two sets of chromosomes or twice the haploid number |
diploid | (genetics) an organism or cell having the normal amount of DNA per cell |
dominance | The organic phenomenon in which one of a pair of alleles present in a genotype is expressed in the phenotype and the other allele of the pair is not |
dominant | (of genes) producing the same phenotype whether its allele is identical or dissimilar / dissimilar |
expression | (genetics) the process of expressing a gene |
filial | Designating the generation or the sequence of generations following the parental generation |
gene, cistron, factor | (genetics) a segment of DNA that is involved in producing a polypeptide chain |
haploid, haploidic, monoploid | Of a cell or organism having a single set of chromosomes |
haploid | (genetics) an organism or cell having only one complete set of chromosomes |
haplotype | (genetics) a combination of alleles (for different genes) that are located closely together on the same chromosome and that tend to be inherited together |
heteroploid | (genetics) an organism or cell having a chromosome number that is not an even multiple of the haploid chromosome number for that species |
heterosis, hybrid vigor | (genetics) the tendency of a crossbred organism to have qualities superior to those of either parent |
heterozygote | (genetics) an organism having two different alleles of a particular gene and so giving rise to varying offspring |
heterozygous | Having dissimilar / dissimilar alleles at corresponding chromosomal loci |
homozygote | (genetics) an organism having two identical alleles of a particular gene and so breeding true for the particular characteristic |
homozygous | Having identical alleles at corresponding chromosomal loci |
hybrid, crossbreed, cross | (genetics) an organism that is the offspring of genetically dissimilar / dissimilar parents or stock |
hybridization, hybridisation, crossbreeding, crossing, cross, interbreeding, hybridizing | (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids |
inheritance, hereditary pattern | (genetics) attributes acquired via biological heredity from the parents |
insertional mutagenesis | (genetics) a mutation caused by the insertion of exogenous DNA into a genome |
inversion | (genetics) a kind of mutation in which the order of the genes in a section of a chromosome is reversed |
linkage, gene linkage | (genetics) traits that tend to be inherited together as a consequence of an association between their genes |
mapping, chromosome mapping | (genetics) the process of locating genes on a chromosome |
meiosis, miosis, reduction division | (genetics) cell division that produces reproductive cells in sexually reproducing organisms |
monogenic | Of or relating to an inheritable character that is controlled by a single pair of genes |
multivalent | Used of the association of three or more homologous chromosomes during the first division of meiosis |
mutation, genetic mutation, chromosomal mutation | (genetics) any event that changes genetic structure |
parental | Designating the generation of organisms from which hybrid offspring are produced |
point mutation, gene mutation | (genetics) a mutation due to an intramolecular reorganization of a gene |
polygenic | Of or relating to an inheritable character that is controlled by several genes at once |
polymorphism | (genetics) the genetic variation within a population that natural selection can operate on |
polyploid | Of a cell or organism having more than twice the haploid number of chromosomes |
polyploid | (genetics) an organism or cell having more than twice the haploid number of chromosomes |
position effect | (genetics) the effect on the expression of a gene that is produced by changing its location in a chromosome |
recessive | (of genes) producing its characteristic phenotype only when its allele is identical |
recombination | (genetics) a combining of genes or characters different from what they were in the parents |
replication | (genetics) the process whereby DNA makes a copy of itself before cell division |
reversion | (genetics) a return to a normal phenotype (usually resulting from a second mutation) |
saltation | (genetics) a mutation that drastically changes the phenotype of an organism or species |
segregation | (genetics) the separation of paired alleles during meiosis so that members of each pair of alleles appear in different gametes |
sex chromosome | (genetics) a chromosome that determines the sex of an individual |
single nucleotide polymorphism, SNP | (genetics) genetic variation in a DNA sequence that occurs when a single nucleotide in a genome is altered |
transcription | (genetics) the organic process whereby the DNA sequence in a gene is copied into mRNA |
transduction | (genetics) the process of transfering genetic material from one cell to another by a plasmid or bacteriophage |
transformation | (genetics) modification of a cell or bacterium by the uptake and incorporation of exogenous DNA |
translate | Determine the amino-acid sequence of a protein during its synthesis by using information on the messenger RNA |
translation | (genetics) the process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm |
translocation | (genetics) an exchange of chromosome parts |
transposition | (genetics) a kind of mutation in which a chromosomal segment is transfered to a new position on the same or another chromosome |
triploid | Of a cell or organism having three complete sets of chromosomes |
unit character | (genetics) a character inherited on an all-or-none basis and dependent on the presence of a single gene |
univalent | Used of a chromosome that is not paired or united with its homologous chromosome during synapsis |
vector | (genetics) a virus or other agent that is used to deliver DNA to a cell |
zygote, fertilized ovum | (genetics) the diploid cell resulting from the union of a haploid spermatozoon and ovum (including the organism that develops from that cell) |
Narrower | cytogenetics | The branch of biology that studies the cellular aspects of heredity (especially the chromosomes) |
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genomics | The branch of genetics that studies organisms in terms of their genomes (their full DNA sequences) |
molecular genetics | The branch of genetics concerned with the structure and activity of genetic material at the molecular level |
pharmacogenetics | The branch of genetics that studies the genetically determined variations in responses to drugs in humans or laboratory organisms |
proteomics | The branch of genetics that studies the full set of proteins encoded by a genome |
Broader | biology, biological science | The science that studies living organisms |
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Spanish | genética |
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Catalan | genètica |
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Adjectives | genetic, genetical | of or relating to the science of genetics |
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Nouns | geneticist | a biologist who specializes in genetics |
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