Interchange heterozygosity and selection in rye
نویسندگان
چکیده
منابع مشابه
Selection for Interchange Heterozygosity in an Inbred Culture of Blaberus Discoidalis (Serville).
ERMANENT interchange heterozygosity is not a common phenomenon. Its Psuccess depends on conditions of two kinds, those internal and those external to the organism. The failure of interchange heterozygotes is generally attributed to their semisterility. Their fertility depends on such internal factors as the degree of multiple association and the orientation of the multiples at metaphase of meio...
متن کاملThe Orientation of Multiple Associations Resulting from Interchange Heterozygosity.
INTERCHANGE complexes in which the frequency of the different orientations at metaphase I departs from the random expectation have often been reported (see DARLINGTON 1937, BURNHAM 1956). Most frequently an excess of the alternate orientation, and a deficiency of one or both of the adjacent arrangements, has been found. It is unlikely that interchange heteroyzgosity will become incorporated int...
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2 Methods and discussion 7 2.1 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 Homogeneous laws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.3 Comparison with oriented percolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.4 Discussion and open problems . . . ....
متن کاملSelection on heritable heterozygosity but no response to selection. Why?
The realisation that heterozygosity can be heritable has recently generated some elegant research. However, none of this work has discussed the fact that when heterozygote advantage occurs, heterozygosity can be heritable, yet allele frequencies remain at equilibrium and do not evolve with time. From a quantitative genetic perspective this means the character is heritable, is under selection, y...
متن کاملA Study of Interchange Heterozygosity in a Population of Datura Meteloides.
C YTOLOGICAL studies of natural populations are revealing an increasing number of species, both plant and animal, whose populations are characterized by polymorphism for chromosomal rearrangements. Recent examples, for instance, have been found in the marine snail Purpura lapillus by STAIGER (1954), in the grasshopper Moraba scurra by WHITE (1956), in two species of cockmaches (LEWIS and JOHN 1...
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ژورنال
عنوان ژورنال: Heredity
سال: 1978
ISSN: 0018-067X,1365-2540
DOI: 10.1038/hdy.1978.59