What's the difference between heterosis and tendency?

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.

Tendency


Definition:

  • (n.) Direction or course toward any place, object, effect, or result; drift; causal or efficient influence to bring about an effect or result.

Example Sentences:

  • (1) The technique is facilitated by an amazingly low tendency to bleeding.
  • (2) PMS is more prevalent among women working outside the home, alcoholics, women of high parity, and women with toxemic tendency; it probably runs in families.
  • (3) Employed method of observation gave quantitative information about the influence of odours on ratios of basic predeterminate activities, insect distribution pattern and their tendency to choose zones with an odour.
  • (4) EI showed a tendency to drop from week 20 to week 40 in the men and a tendency to increase from week 20 to week 40 in the women.
  • (5) They presented their clinical observations on 4 brothers from the 'G Family' who shared a constellation of findings with a generalised tendency to midline defects.
  • (6) A tendency of reduced forepaw grasping ability was seen in lead-treated rats during the end of the lead exposure.
  • (7) It seams rational to proceed to an earlier total correction in these cases when well defined criteria are fullfilled, as the mortality figures of the palliative and corrective procedures have a tendency to reach each other: (3,2 versus 5,7%).
  • (8) Subjects with high ocular-dominance scores (right- or left-dominant subjects) showed for the green stimulus asymmetric behavior, while subjects with low ocular-dominance scores showed a tendency toward symmetry in perception.
  • (9) The general tendency of gradual CBF reduction from the pedicle to the distal end of all the flaps was observed.
  • (10) There was a remarkable tendency to newborns weighting more than 2000 g and a duration of pregnancy longer than 35 weeks.
  • (11) Radiographically the bone cyst distinguishes itself by its central localisation in the metaphysis, where as the giant cell tumor has an excentric position in the epiphysis with a tendency of extending into the metaphysis.
  • (12) The use of the first oversulfation method provides slightly oversulfated derivatives which exhibit strong anticoagulant properties and may constitute effective antithrombotic drugs with no bleeding tendency, a side effect perhaps related to a high rate of sulfation.
  • (13) The debate certainly hit upon a larger issue: the tendency for people in positions of social and cultural power to tell the stories of minorities for them, rather than allowing minority communities to speak for themselves.
  • (14) The results may be due to stronger social reinstatement tendencies in females than in males: Higher levels of social motivation facilitate behavioral performance when the task is easy (straight runway) and inhibit it when the task is difficult (V-shaped runway).
  • (15) The ideal prophylaxis should compensate for the undesired effects of an operation or injury on the coagulation system, without subjecting the patient to the danger of elevated tendency to bleed.
  • (16) The transient shortening of WBCLT was succeeded by a tendency to prolongation of the lysis time.
  • (17) As in the protein sample, a tendency for the cis-proline residues to have the DOWN pucker was observed, but the effect was less pronounced.
  • (18) These data suggest that, in addition to platelet activation, abnormalities of blood clotting, and particularly reduction of antithrombin III, may play a role in the thrombotic tendency associated with homocystinuria.
  • (19) Mitomycin C extravasation produces a painful indolent ulcer that does not have any tendency to heal.
  • (20) There has been a tendency to portray Russians as aggressively imperialistic at heart, a homogeneous bloc thirsty for military adventures.

Words possibly related to "heterosis"