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Inbreeding results in homozygosity which can increase the chances of offspring being affected by recessive traits. [3] In extreme cases, this usually leads to at least temporarily decreased biological fitness of a population [ 4 ] [ 5 ] (called inbreeding depression ), which is its ability to survive and reproduce.
Inbreeding can be referred to as homogamy. [1] Homogamy refers to the maturation of male and female reproductive organs (of plants) at the same time, which is also known as simultaneous or synchronous hermaphrodism and is the antonym of dichogamy. Many flowers appear to be homogamous but some of these may not be strictly functionally homogamous ...
The Japanese Medaka fish has a high tolerance for inbreeding, one line having been bred brother-sister for as many as 100 generations without evidence of inbreeding depression, providing a ready tool for laboratory research and genetic manipulations. Key features of the Medaka that make it valuable in the laboratory include the transparency of ...
Runs of homozygosity (ROH) are contiguous lengths of homozygous genotypes that are present in an individual due to parents transmitting identical haplotypes to their offspring. [ 1 ] The potential of predicting or estimating individual autozygosity for a subpopulation is the proportion of the autosomal genome above a specified length, termed F ...
The concept of F-statistics was developed during the 1920s by the American geneticist Sewall Wright, [1] [2] who was interested in inbreeding in cattle. However, because complete dominance causes the phenotypes of homozygote dominants and heterozygotes to be the same, it was not until the advent of molecular genetics from the 1960s onwards that ...
Date/Time Thumbnail Dimensions User Comment; current: 01:55, 4 April 2010: 240 × 335 (7 KB): Dodo bird {{Information |Description={{en|1=An intensive form of linebreeding where an individual with highly desirable traits(S) is mated to his daughter(D1) and daughter's daughter(D2) and so on, in order to maximise the percentage of S's genes in the offsprings.
Mean time (±s.d.) females spent courting in front of the non-kin (left bars) and brothers (right bars). Given is the time females spent in the choice zone measuring 7×19 cm in front of the males' compartments for outbred (n=9) and inbred fish (n=7) as well as for all females (n=16). Each test lasted 1800 s. n.s., non-significant, **p<0.01.
Conventional inbreeding procedures take six generations to achieve approximately complete homozygosity, whereas doubled haploidy achieves it in one generation. [1] Dihaploid plants derived from tetraploid crop plants may be important for breeding programs that involve diploid wild relatives of the crops.