That imprinting might be a feature of mammalian development was suggested in breeding experiments in mice carrying reciprocal translocations.

He came to his ideas as the result of experiments in plant and animal breeding, some of which he outlined in an unpublished manuscript, the Elements of Agriculture.

The text suggests that Jacob performed breeding experiments over the years to make his own flocks both more abundant and stronger than Laban's, that Laban responded by repeatedly reinterpreting the terms of Jacob's wages, and that the breeding favored Jacob regardless of Laban's pronouncements.

Breeding experiments in Germany with breeding poodles and golden jackals can produce hybrids.

Early experiments were inconclusive, but with the creation of a moose farm at Pechora-Ilych Nature Reserve in 1949 a small-scale moose domestication program was started, involving attempts at selective breeding of animals based on their behavioural characteristics.

European breeding experiments have shown that in Biston betularia betularia, the allele for melanism producing morpha carbonaria is controlled by a single locus.

They continue their journey during which Nessus is forced to reveal some Puppeteer secrets: they have performed indirect " breeding experiments " on both humans ( breeding for luck ) and kzin ( breeding for less aggressiveness ).

" The plantation at full operations included numerous outbuildings for specialized functions, a nailery, and quarters for domestic slaves along Mulberry Row near the house ; gardens for flowers, produce and Jefferson's experiments in plant breeding, plus tobacco fields and mixed crops.

Gosset's interest in barley cultivation led him to speculate that design of experiments should aim, not only at improving the average yield, but also at breeding varieties whose yield was insensitive ( robust ) to variation in soil and climate.

The Scientists conduct experiments " in plant and animal breeding, the control of infant behavior, educational processes of several sorts, and the use of some of our Two's raw materials ".

According to postwar testimony, this facility served as the main rat breeding farm for the medical units to provide them with bubonic plague vectors for experiments.

The American biologist Sewall Wright, who had a background in animal breeding experiments, focused on combinations of interacting genes, and the effects of inbreeding on small, relatively isolated populations that exhibited genetic drift.

He established a model farm at Woburn, and made experiments with regard to the breeding of sheep.

Dracula appears both as a lawgiver honored for his intelligence, who showed some interest in preserving humans, and as a ruthless scientist ( in the second novel ), conducting hybrid breeding experiments with humans in order to perpetuate his own dwindling species.

Importantly, Bateson wrote, " The only way in which we may hope to get at the truth the mechanism of biological Heredity is by the organization of systematic experiments in breeding, a class of research that calls perhaps for more patience and more resources than any other form of biological enquiry.

But critically, he begins to report a series of breeding experiments, conducted by his pupil, Miss E. R.

But, unlike Bateson, they were familiar with the extensive plant breeding experiments of Gregor Mendel in the 1860s, and they did not cite Bateson's work.

The women, such as Muriel Wheldale ( later Onslow ), carried out a series of breeding experiments in various plant and animal species between 1902 and 1910.

This led the Pommersche Saatzucht Gesellschaft based in Stettin to use the Dramburg region as a testing area for its plant breeding experiments.

However, breeding experiments using many grasshopper species in high-density environments have attempted to invoke the famous insect without success.

His uncle Marcus Columella, " a clever man and an exceptional farmer " ( VII. 2. 30 ), had conducted experiments in sheep breeding, crossing colourful wild rams, introduced from Africa for gladiatorial games, with domestic sheep, and may have influenced his nephew's interests.

However, he is sidetracked by the Cetacyborg's crew's original objective: to capture Princess Oda, in order to use her for the sisterhood's breeding experiments.

The breeding period is highly seasonal, with eggs being recorded between October and March.

The gray whale, ( Eschrichtius robustus ), is a baleen whale that migrates between feeding and breeding grounds yearly.

He distinguished between heritable variation as the result of breeding, and non-heritable variations caused by environmental differences such as soil and climate.

The Common Kestrel starts breeding in spring ( or the start of the dry season in the tropics ), i. e. April / May in temperate Eurasia and some time between August and December in the tropics and southern Africa.

After the very close relationship between the quagga and surviving zebras was discovered, the Quagga Project was started by Reinhold Rau ( 1932 – 2006 ) in South Africa to recreate the quagga by selective breeding from plains zebra stock, with the eventual aim of reintroducing them to the wild.

It should be noted, however, that white-tailed deer were largely absent from the last wild refuge of red wolves on the Gulf Coast between Texas and Louisiana ( where specimens were trapped from the last wild population for captive breeding ), which likely accounts for the discrepancy in their dietary habits listed here.

Finally, sexual conflict is said to occur between breeding partners, sometimes leading to an evolutionary arms race between males and females.

He studied the developmental and anatomical differences between different breeds of many domestic animals, became actively involved in fancy pigeon breeding, and experimented ( with the help of his son Francis ) on ways that plant seeds and animals might disperse across oceans to colonise distant islands.

Darwin described natural selection as being analogous to the artificial selection practised by animal breeders, and emphasised competition between individuals ; Wallace drew no comparison to selective breeding, and focused on ecological pressures that kept different varieties adapted to local conditions.

Productive breeding years are between four and 20 years of age in females, and only between six and 12 years of age in males.

Research in biosalinity includes studies of the biochemical and physiological mechanisms of salt tolerance in plants, breeding and selection for salt tolerance ( halotolerance ), discovery of periods in a crop plant's life cycle when it may be less sensitive to salt, use of saline irrigation water to increase desirable traits ( such as sugar concentration in a fruit ) or to control the ripening process, study of the interaction between salinity and soil properties, and development of naturally salt-tolerant plant species ( halophytes ) into useful agricultural crops.

* Single cross hybrids — result from the cross between two true breeding organisms and produces an F1 generation called an F1 hybrid ( F1 is short for Filial 1, meaning " first offspring ").

* Pair bond, in biology, the strong affinity that develops in some species between the male and female in a breeding pair, or, sometimes, between individuals of the same sex

This can also be found among sea urchins and sea cucumbers, where exhibit care for their young can occur, for instance in a few species of sand dollars who carry their young between the pricks of their oral side, and heart urchins possess breeding chambers.

Modern breeding programs involve carefully regulated introductions between prospective mating pairs and take into account the requirements for enriched enclosures.

Normally a shy animal, the European brown hare changes its behavior in spring, when hares can be seen in broad daylight chasing one another around meadows ; this appears to be competition between males to attain dominance ( and hence more access to breeding females ).

The Foundation started a program of exchange between captive populations in zoos throughout the world to reduce inbreeding, and later began a breeding program of its own.

Aggression between conspecifics in a group typically involves access to resources and breeding opportunities.

This pattern between testosterone and aggression was first observed in seasonally breeding birds, such as the Song Sparrow, where testosterone levels rise modestly with the onset of the breeding season to support basic reproductive functions.

California sea lions breed gregariously between May and August, when they arrive at their breeding rookeries.

Mating may occur outside the rookeries, between non-territorial males and females, as the latter move to and from the breeding site.