12399456https://www.upal.com.my/zh/feeds/jobFeedKwongwahArray ( [0] => HTTP/1.1 200 OK [1] => Date: Sat, 27 Jun 2026 09:52:23 GMT [2] => Content-Type: text/xml; charset=utf-8 [3] => Connection: close [4] => Cache-Control: no-cache, private [5] => Cache-Control: no-cache, no-store, must-revalidate [6] => Set-Cookie: UpalLiveSession=eyJpdiI6Ill1b0Q1UHhcL0dFVnRaWFBtQkYxNXNBPT0iLCJ2YWx1ZSI6InNSV3BsUVlxZ1h5NWJacldUZDZ2OWRLS3pVVE1ONENTc2hCSjB5UFJBeE4relBSZzR0UUdjWGcxTFRoRlJJU0lhN0ZDaDBJNzlieGVMT3UzZkRLdldBPT0iLCJtYWMiOiIxYzExNDY3YjdhYzE4ODNhYWQ5NThhMGU3Njk4M2NlNmMwNGIzMmNjY2FjN2M4NTE1M2E3MmY5NDRjNDZhZmI5In0%3D; expires=Tue, 26-Jun-2029 09:52:23 GMT; Max-Age=94608000; path=/; HttpOnly [7] => X-Frame-Options: SAMEORIGIN [8] => X-Content-Type-Options: nosniff [9] => X-Xss-Protection: 1; mode=block [10] => Referrer-Policy: strict-origin-when-cross-origin [11] => Permissions-Policy: geolocation=(), microphone=(), camera=() [12] => Content-Security-Policy: default-src * 'unsafe-inline' 'unsafe-eval' data: blob:; script-src * 'unsafe-inline' 'unsafe-eval' data: blob:; style-src * 'unsafe-inline' data:; img-src * data: blob:; font-src * data:; connect-src *; frame-src *; object-src *; media-src *; child-src *; [13] => Server: cloudflare [14] => X-Robots-Tag: noindex, nofollow, nosnippet, noarchive [15] => Strict-Transport-Security: max-age=31536000; includeSubDomains; preload [16] => Expires: Sun, 28 Jun 2026 09:52:22 GMT [17] => Vary: Accept-Encoding [18] => Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800} [19] => Cf-Cache-Status: DYNAMIC [20] => Speculation-Rules: "/cdn-cgi/speculation" [21] => Server-Timing: cfCacheStatus;desc="DYNAMIC" [22] => Server-Timing: cfEdge;dur=11,cfOrigin;dur=121 [23] => Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=W2WFGDFKznql3lvS0riVSvM5cWuRWaEVHhmQc5m7UqmQeQAwdxH%2BuLD3vCnZBg4G%2B%2FPqxtJsFOlz8pPefiv3o8SJ7DtKT85EkdVpKjoNnbvTMBKj8ErwOrxYzv4Yfetl2m0%3D"}]} [24] => CF-RAY: a1238f00f88ffcf2-SIN [25] => alt-svc: h3=":443"; ma=86400 ) 789

澳洲布里斯本录得全球第2宗半同卵双胞胎个案，科学家指情况极罕见，因半同卵双胞胎存活机会不大。一名孕妇于2014年诞下龙凤胎，当时她28岁，属自然怀孕，亦是医学界首次有孕妇在怀孕其间，就发现半同卵双胞胎的案例，收录于《新英格兰医学杂志》。

主诊医生菲斯克指，“孕妇怀孕六周时进行超声波检查，单一胎盘和羊膜囊的位置，显示她怀有同卵双胞胎。但她怀孕14周时再照超声波却显示，婴儿是龙凤胎，但同卵双胞胎而言是不可能。”

半同卵双胞胎是指单一颗卵子同时跟两颗精子结合后分裂，产生3套而非两套染色体，研究员指胚胎因此难以存活，直至2007年美国才录得全球首宗个案。

另两种较常见的双胞胎，其中一种是同卵双胞胎，即单一颗卵子受精后自然分裂成两个胚胎，两者的染色体、基因等均接近完全相同。另一种则是异卵双胞胎，两颗卵子各自受精后形成两颗受精卵，发育成两个独立胚胎，各自有独立的遗传基因，故有机会是龙凤胎，外貌特征未必相似，常见于较年长的孕妇，因她们较易于月经时排出两颗卵子。

 

---

// // // //