Estimation of Fitness Components in DROSOPHILA MELANOGASTER. II. Influence of Reduced Transmission Frequency
AUTOR(ES)
Katz, Alan J.
RESUMO
Results are presented of further analyses of the significant effects of reciprocal crosses reported by Katz and Cardellino (1978) in regard to viability indices of wild-type second chromosome heterozygotes. The observed differences between reciprocal crosses can be explained by the existence of reduced transmission frequencies of the wild-type homologue from Pm/+ and Cy/+ paternal parents. Mean estimates of transmission frequencies from Pm/+ and Cy/+ males in California and Japan populations are significantly less than the Mendelian expectation of 1/2. The transmission frequencies of +i chromosomes from Pm/+i and Cy/+i males are also found to be positively correlated in the California and pooled populations, suggesting that the degree of distortion is primarily due to the +i chromosome rather than to Cy or Pm. A sufficient estimator of relative viability that is independent of distorted transmission frequencies is derived for use in the Cy/Pm technique of viability estimation.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1216372Documentos Relacionados
- Chromosome Interactions in DROSOPHILA MELANOGASTER. II. Total Fitness
- Fitness Effects of Ems-Induced Mutations on the X Chromosome of DROSOPHILA MELANOGASTER. II. Hemizygous Fitness Effects
- Correlations between Chromosome Segments and Fitness in DROSOPHILA MELANOGASTER. II. the X Chromosome and Egg Viability
- Estimation of Fitness Components in DROSOPHILA MELANOGASTER . I. Heterozygote Viability Indices
- Genetic Analysis of Natural Populations of DROSOPHILA MELANOGASTER in Japan. II. the Measurement of Fitness and Fitness Components in Homozygous Lines
