Journals / Ankara Üniversitesi Veteriner Fakültesi Dergisi / 2019 / Cilt: 66 - Sayı: 4

Investigation on presence of major gene for body weight, feed intake and feed efficiency using a segregation analyses in a mice population

Farelerde vücut ağırlığı, yem tüketimi ve yem etkinliğinden sorumlu major gen varlığının segregasyon analizi ile incelemesi

Pages
325–330
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Although the major gene has been identified for body weight and feed intake, this result is not confirmed by the Mendelian transmission probabilities.

📌 3 Key Takeaways

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Objective & Hypothesis:Recent developments in molecular genetics and statistics have allowed the identification and use of major genes to explain the genetic variation.
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Key Findings & Data:For this purpose, previously collected dataset was used (n= 661).
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Conclusion & Impact:Although the major gene has been identified for body weight and feed intake, this result is not confirmed by the Mendelian transmission probabilities.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Recent developments in molecular genetics and statistics have allowed the identification and use of major genes to explain the genetic variation. In this context, segregation analysis is a fast, reliable and inexpensive method that uses only phenotype and pedigree information. The aim of this study was to examine whether body weight, feed intake, and feed efficiency in a mouse population are directed by major gene in addition to polygenic and major gene effects by segregation analysis. For this purpose, previously collected dataset was used (n= 661). In this study, genetic variance, error variance, major gene variance, additive and dominant gene effects were estimated by segregation analyses. Dominant variance (1.04) was found to be smaller than the additive genetic variance (7.32) for body weight. Polygenic and major gene heritability predicted as 0.29 (± 0.63) and 0.81 (± 0.98) for body weight, 0.35 (± 0.63) and 0.96 (± 0.98) for feed intake and 0.52 (± 0.63) and 0.81 (± 0.98) for feed efficiency respectively. Existence of major gene was determined by examining the highest probability density regions. Although the major gene has been identified for body weight and feed intake, this result is not confirmed by the Mendelian transmission probabilities.

Özet

Moleküler genetik ve istatistikte elde edilen son gelişmeler sayesinde genetik çeşitliliğin açıklanmasında major genlerin belirlenmesi ve kullanılması olanaklı hale gelmiştir. Segregasyon analizi sadece fenotip ve pedigri bilgilerini kullanan hızlı, güvenilir ve ucuz bir yöntemdir. Bu çalışmanın amacı bir fare populasyonunda vücut ağırlığı, yem etkinliği ve yem tüketiminin poligenik etkilere ek olarak major gen tarafından yönlendirilip yönlendirilmediğinin segregasyon analizi ile incelenmesidir. Bu amaçla daha önceden toplanan bir veri seti kullanılmıştır (n= 661). Bu çalışmada segregasyon analizi ile eklemeli genetik varyans, hata varyansı, major gen varyansı, eklemeli ve baskın gen etkileri tahmin edilmiştir. Vücut ağırlığında; dominant etkinin (1.04) eklemeli gen etkisinden (7.32) daha küçük olduğu bulunmuştur. Poligenik model kullanılarak kalıtım derecesi tahmini 0.29 (± 0.63) ve major gen modelinde kalıtım derecesi 0.81 (± 0.98) olarak bulunmuştur. Poligenik model kullanılarak kalıtım derecesi tahmini 0.35 (± 0.63) ve major gen modelinde kalıtım derecesi 0.96 (± 0.98) olarak bulundu Poligenik model kullanılarak kalıtım derecesi tahmini 0.52 (± 0.63) ve major gen modelinde kalıtım derecesi 0.81 (± 0.98) olarak bulundu. Major gen varlığı en yüksek soncul olasılık bölgeleri incelenerek belirlenmiştir. Her ne kadar vücut ağırlığı ve yem tüketimi için major gen belirlenmiş olsada, mendelci geçiş olasılıkları bu sonucu doğrulamamıştır.

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Cite This Article

KARACAÖREN, B., MOSLEM, I. (2022). Investigation on presence of major gene for body weight, feed intake and feed efficiency using a segregation analyses in a mice population. Ankara Üniversitesi Veteriner Fakültesi Dergisi, Cilt: 66 - Sayı: 4, 325–330. https://ajindex.com/articles/444541

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