التفاصيل البيبلوغرافية
| العنوان: |
Evolution of sex-ratio: Brief review with mathematical study of some simple novel models |
| المؤلفون: |
Otto, Paulo A. |
| المصدر: |
Genetics and Molecular Biology. January 2021 44(3) |
| بيانات النشر: |
Sociedade Brasileira de Genética, 2021. |
| سنة النشر: |
2021 |
| مصطلحات موضوعية: |
Sex-ratio (s.r.), evolutionary stable s.r., extraordinary s.r., population genetic models |
| الوصف: |
Besides reviewing the unusual case of sex-ratio in the lemming and presenting alternative analyses of general models in which the shift in the usual sex-ratio 1:1 is determined by autosomal or sex-linked mutant alleles, three novel models are presented, in which the shift on the progeny sex-ratio depends on the number of copies of a mutant allele present in the parental pair. The analysis of these models with additive effects shows that: 1) autosomal mutations that alter the usual sex-ratio are eliminated from the population; 2) mutations occurring on the X chromosome lead to an evolutionary stable 1:1 sex-ratio only if the mutation favors the production of males; when the mutant allele favors the production of females, however, females will prevail in the population, with a frequency dependent impact on δ (the deviation from the usual 0.5 proportion) ; for most of the range of possible values of δ the stable but extraordinary sex-ratio will vary from 1 male : 1 female to 1 male : 3 females or 1 male : 2 females approximately depending whether the mutant allele is randomly inactivated or not. |
| نوع الوثيقة: |
article |
| وصف الملف: |
text/html |
| اللغة: |
English |
| تدمد: |
1415-4757 |
| DOI: |
10.1590/1678-4685-gmb-2021-0053 |
| URL الوصول: |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572021000400602 |
| Rights: |
info:eu-repo/semantics/openAccess |
| رقم الانضمام: |
edssci.S1415.47572021000400602 |
| قاعدة البيانات: |
SciELO |
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