Results 261 to 270 of about 394,950 (308)
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Science, 1994
Courtship in Drosophila is influenced by a wide variety of genes, in that many different kinds of pleiotropic mutations lead to defective courtship. This may seem to be a truism, but the broad temporal and spatial expression of most of the fly's "neuro genes" makes it difficult to exclude elements of such genes ...
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Courtship in Drosophila is influenced by a wide variety of genes, in that many different kinds of pleiotropic mutations lead to defective courtship. This may seem to be a truism, but the broad temporal and spatial expression of most of the fly's "neuro genes" makes it difficult to exclude elements of such genes ...
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Veterinary Clinics of North America: Food Animal Practice, 1992
The mating management of pigs is conducted under a wide spectrum of management techniques because females are variously hand-mated, pen-mated, or artificially inseminated. Factors that may affect the onset of estrus when hand-mating are boar exposure, method of housing females after weaning, season, type of facilities, and parity.
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The mating management of pigs is conducted under a wide spectrum of management techniques because females are variously hand-mated, pen-mated, or artificially inseminated. Factors that may affect the onset of estrus when hand-mating are boar exposure, method of housing females after weaning, season, type of facilities, and parity.
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American Journal of Reproductive Immunology and Microbiology, 1985
ABSTRACT: Human leukocyte antigen (HLA) typing was undertaken in 151 unrelated blood donors and in 35 normal couples having at least two living children. We compared observed and expected sharing of HLA antigens at four loci in normal couples. We also compared the observed sharing in couples with the expected sharing in unrelated blood donors if taken
P, Bischof +5 more
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ABSTRACT: Human leukocyte antigen (HLA) typing was undertaken in 151 unrelated blood donors and in 35 normal couples having at least two living children. We compared observed and expected sharing of HLA antigens at four loci in normal couples. We also compared the observed sharing in couples with the expected sharing in unrelated blood donors if taken
P, Bischof +5 more
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Journal of Biological Systems, 2003
When we consider structured populations with sexual reproduction, the distribution of characters among mating pairs may influence the population biology, namely its dynamics and genetics. In the present paper, we propose a general framework to estimate the population mating patterns taking into account individual mating preferences and mating system ...
Bessa-Gomes, Carmen +3 more
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When we consider structured populations with sexual reproduction, the distribution of characters among mating pairs may influence the population biology, namely its dynamics and genetics. In the present paper, we propose a general framework to estimate the population mating patterns taking into account individual mating preferences and mating system ...
Bessa-Gomes, Carmen +3 more
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2003
For the production of transgenic rats, matings are carried out under controlled conditions in order to obtain a supply of one-cell fertilized eggs, and to obtain pseudopregnancy in females, which will act as surrogate mothers for the microinjected eggs.
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For the production of transgenic rats, matings are carried out under controlled conditions in order to obtain a supply of one-cell fertilized eggs, and to obtain pseudopregnancy in females, which will act as surrogate mothers for the microinjected eggs.
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Mating type and mating strategies in Neurospora
BioEssays, 1990AbstractIn the heterothallic species Neurospora crassa, strains of opposite mating type, A and a, must interact to give the series of events resulting in fruiting body formation, meiosis, and the generation of dormant ascospores. The mating type of a strain is specified by the DNA sequence it carries in the mating type region; strains that are ...
R L, Metzenberg, N L, Glass
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The Influence of the Ideal Mate Image on Mate Selection and Mate Perception
Journal of Marriage and the Family, 1965This study attempted to determine whether ideal mate images actually influence mate selection. The mate perceptions of 90 engaged persons were compared with the ideal mate conceptions of single, unengaged persons precision-matched to the engaged individuals on personality characteristics. Analysis of personality and perception correlation matrices lead
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Preferential mating. Nonrandom mating of a continuous phenotype
Theoretical Population Biology, 1976Abstract A phenotypically determined nonrandom mating model is specified for a continuous trait controlled by a major gene. The distribution of phenotypic preferences of any particular individual choosing a mate may be specified in terms of the phenotype of the individual.
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2003
In the process of creating and analyzing transgenic mice, matings between male and female animals are required for the following reasons: 1. To produce fertilized one-cell eggs for microinjection. Natural matings between mature females (over 6-7 wk of age) and stud males (over 7-8 wk of age) can be used to supply the one-cell eggs.
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In the process of creating and analyzing transgenic mice, matings between male and female animals are required for the following reasons: 1. To produce fertilized one-cell eggs for microinjection. Natural matings between mature females (over 6-7 wk of age) and stud males (over 7-8 wk of age) can be used to supply the one-cell eggs.
openaire +2 more sources