GENETIC DISSECTION OF HYBRID INCOMPATIBILITIES BETWEEN DROSOPHILA SIMULANS AND D. MAURITIANA.: III. HETEROGENEOUS ACCUMULATION OF HYBRID INCOMPATIBILITIES, DEGREE OF DOMINANCE, AND IMPLICATIONS FOR HALDANE—RULE
GENETIC DISSECTION OF HYBRID INCOMPATIBILITIES BETWEEN DROSOPHILA SIMULANS AND D. MAURITIANA.: III. HETEROGENEOUS ACCUMULATION OF HYBRID INCOMPATIBILITIES, DEGREE OF DOMINANCE, AND IMPLICATIONS FOR HALDANE—RULE
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果蝇和 D. MAURITIANA 之间杂种不相容性的遗传分析：III. 杂种不相容性的异质积累、优势程度以及对 Haldane 规则的影响
DOI：
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
D. Hartl
中科院分区：
文献类型：
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作者：
Y. Tao;D. Hartl
摘要通过对拟果蝇与毛里求斯果蝇杂交不亲和性的渐渗估算，探讨了haldane规则的遗传基础。杂交雄性不育（HMS）积累量至少是杂交雌性不育（HFS）或杂交致死（HL）积累量的10倍以上。在纯D. simulans背景中，HMS和HL的优势度分别为0.23-0.29和0.33-0.39；F1背景下的HL不太可能很小。这里获得的证据被用来检验霍尔丹规则的Turelli - Orr模型。在异配子雄性类群中，如果蝇（XY雄性和XX雌性），Haldane规则的基础是复合原因，尤其是更快的雄性进化和隐性杂交不亲和性。然而，如果更快的雄性进化是由性选择驱动的，那么它就与Haldane关于异配子雌性类群（如鳞翅目（ZW雌性和ZZ雄性））不育的规则相矛盾。更快的异配子性进化假说似乎最符合当前的数据。这一假说认为，配子发生在异配子性别中，而不是在雄性中，比在同配子性别中进化得快得多，部分原因是性别比例选择。这一假说不仅以一种简单的方式解释了霍尔丹法则，而且表明基因组冲突在进化和物种形成中起着重要作用。
Abstract The genetic basis of Haldane—rule was investigated through estimating the accumulation of hybrid incompatibilities between Drosophila simulans and D. mauritiana by means of introgression. The accumulation of hybrid male sterility (HMS) is at least 10 times greater than that of hybrid female sterility (HFS) or hybrid lethality (HL). The degree of dominance for HMS and HL in a pure D. simulans background is estimated as 0.23—0.29 and 0.33—0.39, respectively; that for HL in an F1 background is unlikely to be very small. Evidence obtained here was used to test the Turelli‐Orr model of Haldane's rule. Composite causes, especially, faster‐male evolution and recessive hybrid incompatibilities, underlie Haldane's rule in heterogametic male taxa such as Drosophila (XY male and XX female). However, if faster‐male evolution is driven by sexual selection, it contradicts Haldane's rule for sterility in hetero‐gametic‐female taxa such as Lepidoptera (ZW female and ZZ male). The hypothesis of a faster‐heterogametic‐sex evolution seems to fit the current data best. This hypothesis states that gametogenesis in the heterogametic sex, instead of in males per se, evolves much faster than in the homogametic sex, in part because of sex‐ratio selection. This hypothesis not only explains Haldane's rule in a simple way, but also suggests that genomic conflicts play a major role in evolution and speciation.
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影响因子：
3.3
作者：
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影响因子：
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作者：
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影响因子：
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通讯作者：
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