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Tryon 1931, "Studies in Individual Differences in Maze Ability, IV: The Constancy of Individual Differences: Correlation between Learning and Relearning" Tryon 1931, "Studies in Individual Differences in Maze Ability, V: Luminosity and Visual Acuity as Systematic Causes of Individual Differences and an Hypothesis of Maze Ability"
A diallel cross is a mating scheme used by plant and animal breeders, as well as geneticists, to investigate the genetic underpinnings of quantitative traits. [1] [2]In a full diallel, all parents are crossed to make hybrids in all possible combinations.
The divergence between the (two) parent lines promotes improved growth and yield characteristics in offspring through the phenomenon of heterosis ("hybrid vigour" or "combining ability"). Two populations of breeding stock with desired characteristics are subjected to inbreeding until the homozygosity of the population exceeds a certain level ...
The mode of reproduction of a crop determines its genetic composition, which, in turn, is the deciding factor to develop suitable breeding and selection methods. Knowledge of mode of reproduction is also essential for its artificial manipulation to breed improved types.
Breeding stock is a group of animals used for the purpose of planned breeding. When individuals are looking to breed animals, they look for certain valuable traits in purebred animals, or may intend to use some type of crossbreeding to produce a new type of stock with different, and presumably superior abilities in a given area of endeavor.
Selective breeding (also called artificial selection) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits (characteristics) by choosing which typically animal or plant males and females will sexually reproduce and have offspring together.
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In this system, the ability of the female to choose her mate is limited. This process, known as copulatory courtship, is prevalent in many insect species. [15] In most species, the male sex initiates courtship displays in precopulatory sexual selection. Performing a display allows the male to present his traits or abilities to a female.