What's the difference between hardiness and heterosis?

Hardiness


Definition:

  • (n.) Capability of endurance.
  • (n.) Hardihood; boldness; firmness; assurance.
  • (n.) Hardship; fatigue.

Example Sentences:

  • (1) Twenty drug-free patients (12 women and 8 men) meeting DSM-III criteria for major depressive disorder were given the Kobasa Hardiness Questionnaire, which contains subscales measuring feelings of powerlessness, security, and alientation.
  • (2) Hardy has a 10in tattoo of Lee along his left shin.
  • (3) It is suggested that this early immune maturity may play a role in the hardiness of WAD goats and in their relative resistance to helminth and protozoan infection as compared with local sheep.
  • (4) A heat source contained in a modified Hardy-Wolff-Goodell dolorimeter was used as a stimulus to produce pain on the posterolateral aspects of the left forearms of volunteer subjects.
  • (5) Hardy headlines as an ex-con named Bob Saginowski who is trying to live out a quiet life away from crime as a bartender.
  • (6) There weren't many people out on their bikes in Harrogate over the weekend: the weather was too poor even for hardy Yorkshire folk.
  • (7) Most critical are (a) how hardiness is to be measured; (b) whether hardiness should be treated as a unitary phenomenon or as three separate phenomena associated with commitment, control, and challenge; and (c) whether hardiness has direct effects on health or indirect effects by virtue of buffering the impact of stressful life events.
  • (8) Gene frequencies were compared with previous data and all European populations studied so fare agreed with the Hardy-Weinberg equilibrium.
  • (9) The number of people in the group corresponded to the theoretical number of heterozygotes in accordance with the Hardy-Weinberg equation, suggesting that sucrase deficiency is recessively inherited in a simple Mendelian fashion.
  • (10) The study findings did not support the buffering effects of hardiness in the presence of greater amounts of stress.
  • (11) Vegetation is low, widely spaced and hardy, most of it armed with spines.
  • (12) The favorable morphology and hardiness in organ culture of this preparation have permitted a wide range of electrophysiological, cellular, and molecular studies.
  • (13) Departures from the Hardy-Weinberg expectations, indicating an excess of heterokaryotypes, were noted and critically analysed by comparing samples obtained simultaneously in the same locality from different cow sheds, from different sections of the same cow shed and from night and day catches in the same cow shed.
  • (14) The distribution of the Blast-1 genotypes in the present study was concordant with Hardy-Weinberg equilibrium (p greater than 0.7), which indicates that the frequency of the Blast-1 gene in the population is derived from random mating in preceding generations.
  • (15) The observed frequency distribution of individuals with homozygous NOR-positive, heterozygous, and homozygous negative acrocentric chromosomes was in accordance with the Hardy-Weinberg law in all five pairs of the acrocentric chromosomes as well as in total.
  • (16) Over 42% of the variance in family functioning was accounted for by family hardiness, functional support, family stressors, and parental age.
  • (17) Facebook Twitter Pinterest Tom Hardy and George Miller at the press conference.
  • (18) Theoretical estimates were made of the chronological decrease in the incidence using a formula for Hardy-Weinberg expectation in a partially inbred population and applying appropriate consanguinity rates, taken from the literature, during the period from 1942 to 1983.
  • (19) An experiment is reported which tests Fazey & Hardy's (1988) catastrophe model of anxiety and performance.
  • (20) Another thing is that scientists like Sarah Hardy have been able to demonstrate a far greater richness of female flexibility in reproductive strategies.

Heterosis


Definition:

  • (n.) A figure of speech by which one form of a noun, verb, or pronoun, and the like, is used for another, as in the sentence: "What is life to such as me?"

Example Sentences:

  • (1) A comparative study was performed for isoelectric and electrophoretic spectra blood serum albumin of parental breeds of chickens and their heterosis hybrids --broiler cocks.
  • (2) Heterosis and recombination effects were not significant for milk production or milk composition.
  • (3) Heterosis with multiplicative action between loci implies multiplicative accumulation of heterosis present at individual loci in part I, in addition to multiplicative (a x a)-interaction in part II.
  • (4) Effects of maternal heterosis were positive for both prenatal and postnatal survival.
  • (5) These results support the hypothesis that heterosis in cattle for traits related to growth and size is due to dominance effects of genes.
  • (6) The possible explanations for heterosis and heterozygous advantage have included the hypothesis that the metabolic versatility of heterozygotes for functional alleles of structural genes would enhance resistance to environmental insult, i.e.
  • (7) Heterosis effects in animals of all ages for reproductive traits in F1 dams producing F2 progeny differed among the three composite populations, as did heterosis retained in combined F2 and F3 dams producing F3 and F4 progeny.
  • (8) Heterosis for postweaning growth rate was 3.9% (P less than .01) and for slaughter weight 5.0% (P less than .01).
  • (9) Variables important for selection were determined by breeding value, individual and maternal heterosis, parity, size of birth litter, sex, age of dam, genetic and environmental relationships between variables, and common litter, permanent, and random environmental effects.
  • (10) The growth rate of the steers differed in the two environments; however, heterosis for slaughter weight was of the same magnitude in both environments.
  • (11) Percent direct heterosis for body weight was larger in the selected crosses relative to the control crosses through 31 days of age, but the trend was reversed by 63 days.
  • (12) Direct heterosis tended to be larger than maternal heterosis in both selected and control crosses.
  • (13) Data on 135 young bulls from a two-breed group diallel experiment involving double-muscled (DM) and normal (N) cattle were analyzed to obtain estimates of heterosis, maternal and direct effects for carcass traits.
  • (14) Differences in dimer stabilities in vivo would affect the total GPI-1 levels in heterozygotes and could account for non-additive inheritance but would be insufficient to explain heterosis for GPI-1 activity.
  • (15) The effects of maternal heterosis and maternal and grandmaternal breed effects on cumulative lifetime number and weight of calves weaned per cow entering the breeding herd were evaluated for 172 reciprocal crossbred and 156 straightbred cows of the Hereford, Angus, and Shorthorn breeds.
  • (16) Hypothesis 1: Heterosis is a consequence of a more efficient hybrid metabolic system in that it can produce more product with equal input.
  • (17) Allelic effects are assumed to be additive on the scale of enzyme activity, heterosis arising whenever a heterozygote has a mean level of activity closer to optimal than that of other genotypes in the population.-A new measure of genetic divergence between populations is proposed, which is readily interpreted genetically, and increases approximately linearly with time under centripetal selection, drift and mutation.
  • (18) Average maternal heterosis, though generally positive, was not significant for carcass traits on either an age-constant or weight-constant basis.
  • (19) Sixteen inter-related F1 hybrids were individually compared with their parents, revealing the presence of large amounts of dominance and heterosis for the various competitive parameters, all directed towards improved competitive ability.
  • (20) When additive X additive effects were ignored, total heterosis was significant for earlier day born, heavier birth weight, preweaning and postweaning gain, and heavier and fatter carcasses.

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