what is heterosis
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- Heterosis, hybrid vigor, or outbreeding enhancement, is the improved or increased function of any biological quality in a hybrid offspring.The adjective derived from heterosis is heterotic.An offspring exhibits heterosis if its traits are enhanced as a result of mixing the genetic contributions of its parents.eterosis is often discussed as the opposite of inbreeding depression although differences in these two concepts can be seen in evolutionary considerations such as the role of genetic variation or the effects of genetic drift in small populations on these concepts.
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- Heterozygote advantage. A heterozygote advantage (heterozygous advantage) describes the case in which the heterozygote genotype has a higher relative fitness than either the homozygote dominant or homozygote recessive genotype. The specific case of heterozygote advantage is due to a single locus known as overdominance.
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Is it Dry Eye, Allergy or Both? Dry eye syndrome (DES), also known as keratoconjunctivitis sicca (KCS) or keratitis sicca, is a multifactorial disease of the tears and the ocular surface that results in discomfort, visual disturbance, and tear film instability with potential damage to the ocular surface. It is accompanied by increased osmolarity of the tear film and inflamm...
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What is Hetalia? dragon-heart37 said: hetalia- axis powers is a manga and anime series created by Hidekaz Himaruya. The story is based off world history, mainly the events of World War II. Each main character is a personification of an actual country.
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- Diogenes Syndrome (DS) that is sometimes referred to as ‘senile squalor syndrome’ (as it typically occurs in elderly individuals). Hoarding is often a consequence of having DS, and those with DS often live on their own in severe domestic squalor and unsanitary conditions.
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Heterosis Effect Heterosis Effect. Purebreds and inbreeds often carry genetic disease. Heterosis is a theory in which the phenomenon of crossing two inbred lines can produce descendants with superior genetic foundation.In addition to the absence of inbreeding depressing, present in inbreed and purebred dogs in general, there is some remote inbreeding in any breed.eterosis is a theory in which the phenomenon of crossing two inbred lines can produce descendants with superior genetic foundation.
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- Share. By Tom Head. Definition: Heterosexism is a form of discrimination that favors heterosexuals over lesbians, gay men, and bisexuals. Most legal systems are profoundly heterosexist, offering visitation rights, tax benefits, and other protections to opposite-sex couples that are not available to same-sex couples.
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Convergent evolution Convergent evolution. Convergent evolution is the independent evolution of similar features in species of different lineages. Convergent evolution creates analogous structures that have similar form or function but were not present in the last common ancestor of those groups. The cladistic term for the same phenomenon is homoplasy.
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Heterozygote advantage Zygosity refers to the similarity of genes for a trait in an organism. If both genes are the same, the organism is homozygous for the trait. If both genes are different, the organism is heterozygous for that trait. If one gene is missing, it is hemizygous, and if both... Full article >>>. (Redirected from Heterozygous advantage) Jump to: navigation, search. A heterozygote advantage ( heterozygous advantage) describes the case in which ...
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heterogeneity Heterogeneity is a word that signifies diversity. A classroom consisting of people from lots of different backgrounds would be considered having the quality of heterogeneity. The prefix hetero-means other or different, while the prefix homo-means the same.
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Homogeneity and heterogeneity Homogeneity is the state of being homogeneous. Pertaining to the sciences, it is a substance where all the constituents are of the same nature; consisting of similar parts, or of elements of the like nature. heterogeneous mixture is a mixture of two or more compounds. Examples are: mixtures of sand and water or sand and iron filings, a conglomerate rock, water and oil, a salad, trail mix, and concrete (not cement).
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- Paint the surface with the chalkboard paint. Prep the surface as you would for any paint job. I painted two coats for even coverage. While I've used a classic charcoal gray, the color options are endless. Make chalkboard paint out of your leftover wall paint for a seamless and fun addition to a room or go bold with a bright, contrasting color. Meg Padgett. 3. Condition the chalkboard.
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- Print Email Save. Heteronormative is a term that describes a culture which conforms to heterosexual standards as the norm. Heteronormativity is quite subtle and exists in different forms. The concept of heteronormativity tends to marginalize people who do not belong to the hegemonic types.These include homosexuals and others who refrain from conforming to standard norms about gender and sexuality.eteronormativity is quite subtle and exists in different forms. The concept of heteronormativity tends to marginalize people who do not belong to the hegemonic types. These include homosexuals and others who refrain from conforming to standard norms about gender and sexuality.
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Cladogram A homoplasy is a character state that is shared by two or more taxa due to some cause other than common ancestry. The two main types of homoplasy are convergence (evolution of the same character in at least two distinct lineages) and reversion (the return to an ancestral character state).
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Crossbreeding gets you more than just hybrid vigor “The best thing about heterosis,” says Joe Paschal, Texas AgriLife Extension beef specialist in Corpus Christie, “is that it’s cumulative. So as you start down a crossbreeding program, the fact that you have daughters that are more fertile, produce more milk and have longer longevity, that’s the real benefit.”. But, he stresses, it’s not the only benefit.
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HSG Hysterosalpingography, also called uterosalpingography, is an x-ray examination of a woman’s uterus and fallopian tubes that uses a special form of x-ray called fluoroscopy and a contrast material. An x-ray (radiograph) is a noninvasive medical test that helps physicians diagnose and treat medical conditions.
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Heterozygote advantageupdate A heterozygote advantage (heterozygous advantage) describes the case in which the heterozygote genotype has a higher relative fitness than either the homozygote dominant or homozygote recessive genotype.olymorphism can be maintained by selection favoring the heterozygote, and this mechanism is used to explain the occurrence of some kinds of genetic variability.
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Biology Prefixes and Suffixes: heter- or hetero- Heteromorphic (hetero-morph-ic) - differing in size, form or shape, as in some homologous chromosomes. Heteromorphic also refers to having different forms at different periods in a life cycle. Heteronym (hetero-nym) - one of two words having the same spelling but different sounds and meanings. For example, lead (a metal) and lead (to direct). Heterophil (hetero-phil) - having an attraction to or affinity for different kinds of substances.
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Evolution: Modern Synthesis Heterozygote Advantage-A situation in which a single disadvantageous allele is not selected out of a population, because, when a person is heterozygous for that allele (the person has one disadvantagoues allele and one normal allele), the person gains some sort of local advantage by having the disadvantageous allele.
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Heteronormativity Heteronormativity is the belief that people fall into distinct and complementary genders (male and female) with natural roles in life. It assumes that heterosexuality is the only sexual orientation or only norm, and states that sexual and marital relations are most (or only) fitting between people of opposite sexes.
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Hetero- (prefix) Hetero- (prefix). Hetero- (prefix): Combining form from the Greek heteros meaning different. The opposite is homo-from the Greek homos meaning same.For example, heterogeneous and homogeneous, heterosexual and homosexual, etc.etero- (prefix): Combining form from the Greek heteros meaning different.
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- Hetalia: Axis Powers is a Japanese webcomic, later adapted as a manga and an anime series, by Hidekaz Himaruya. The series' main presentation is as an often over-the-top allegory of political and historic events as well as more general cultural comparisons. Characters are personifications of countries, regions such as Hong Kong and micronations with little reference to other national personifications. Both positive and negative cultural stereotypes form part of each character's personality. The
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Allopatric speciation Allopatric speciation (from the ancient Greek allos, other + Greek patris, fatherland) or geographic speciation is speciation that occurs when biological populations of the same species become vicariant, or isolated from each other to an extent that prevents or interferes with genetic interchange.ortions of a populations that exist along the edges of the parent population's geographic territory have higher likelihood of developing reproductive isolation. Such peripheral populations are likely to possess genes that are different from the parental population.
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Xerostomia Xerostomia, also known as dry mouth[1] and dry mouth syndrome,[2] is dryness in the mouth, which may be associated with a change in the composition of saliva, or reduced salivary flow, or have no identifiable cause.
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heterozygosity 1. heterozygosity-the state of being heterozygous; having two different alleles of the same gene. state-the way something is with respect to its main attributes; the current state of knowledge; his state of health; in a weak financial state.
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- Overview. Heterospory refers to an adaptation seen in later-evolved plants--all seed plants and some ferns--in which spores develop in two different sizes and complete separate reproductive functions.ne of the defining traits of plants is that a single adult plant exists in two separate states, called generations, with differing purposes. The sporophyte generation contains a full set of chromosomes in each cell and produces spores. From the spores, the gametophyte generation forms.