Long-term selection for a quantitative character in large replicate populations of Drosophila melanogaster: 1. Response to selection

Quantitative trait loci affecting life span in replicated populations of Drosophila melanogaster. II. Response to selection.

Three selection experiments were used to identify chromosome regions that contain QTL affecting late-life and early-life fitness in Drosophila melanogaster. The selection experiments were initiated by crossing pairs of inbred lines that had been derived from outbred laboratory populations that had different mean life spans. QTL regions were located by association with microsatellite markers tha...

Studies on natural populations of Drosophila. V. Correlated response to selection in Drosophila melanogaster.

I N the series of experiments to be described, a population of Drosophila melanogaster was selected for increase or decrease in wing length, with and without inbreeding, and the resulting changes in thorax length, rate of egg production, and longevity were observed. Heritabilities, and phenotypic and genetic correlations were also measured at intervals during the ten generations of selection. T...

Evolution of the metabolome in response to selection for increased immunity in populations of Drosophila melanogaster

We used NMR-based metabolomics to test two hypotheses-(i) there will be evolved differences in the metabolome of selected and control populations even under un-infected conditions and (ii) post infection, the metabolomes of the selected and control populations will respond differently. We selected replicate populations of Drosophila melanogaster for increased survivorship (I) against a gram-neg...

Long Term Selection: Repeatability of Response in Finite Populations

the test for adverse selection in life insurance market: the case of mellat insurance company

انتخاب نامساعد یکی از مشکلات اساسی در صنعت بیمه است. که ابتدا در سال 1960، توسط روتشیلد واستیگلیتز مورد بحث ومطالعه قرار گرفت ازآن موقع تاکنون بسیاری از پژوهشگران مدل های مختلفی را برای تجزیه و تحلیل تقاضا برای صنعت بیمه عمر که تماما ناشی از عدم قطعیت در این صنعت میباشد انجام داده اند .وهدف از آن پیدا کردن شرایطی است که تحت آن شرایط انتخاب یا کنار گذاشتن یک بیمه گزار به نفع و یا زیان شرکت بیمه ...