A genetic chimerism or chimera (/ k aɪ ˈ m ɪər ə / ky-MEER-ə or / k ɪ ˈ m ɪər ə / kim-EER-ə) is a single organism composed of cells with more than one distinct genotype. Animal chimeras can be produced by the fusion of two (or more) embryos .

2017年11月6日 · People that have two different sets of DNA are called human chimeras. It can happen when a woman is pregnant with fraternal twins and one embryo dies very early on. The other embryo can "absorb"...

2024年11月17日 · A human chimera is an individual who has two or more genetically distinct cell populations in their body. In most people, every cell contains the same DNA, inherited from a single fertilized egg that divides and differentiates into the tissues and organs of the body.

A human chimera is a human with a subset of cells with a distinct genotype than other cells, that is, having genetic chimerism. In contrast, an individual where each cell contains genetic material from a human and an animal is called a human–animal hybrid , while an organism that contains a mixture of human and non-human cells would be a ...

2016年8月8日 · But chimeras aren't always man-made—and there are a number of examples of human chimeras that already exist. A chimera is essentially a single organism that's made up of cells from two or more...

In molecular biology, and more importantly high-throughput DNA sequencing, a chimera is a single DNA sequence originating when multiple transcripts or DNA sequences get joined.

人类自然产生的奇美拉（chimera，又译「嵌合体」）事件是怎么回事？ 又如何影响到子女的 DNA？ 美国发生过这样的案例，在DNA的检测中发现，生母和亲生子女之间的DNA不匹配（三个儿子，其中两个不匹配），原因是因为生母在母体中孕育的时候，胚胎显示为…

2025年1月7日 · chimera, in genetics, an organism or tissue that contains at least two different sets of DNA, most often originating from the fusion of as many different zygotes (fertilized eggs). The term is derived from the Chimera of Greek mythology, a fire-breathing monster that was part lion, part goat, and part dragon.

2024年2月14日 · When our parents conceive us, their chromosomes combine to form the unique sequence of DNA that we carry with us for the rest of our lives. Under the right circumstances, however, it's possible for one body to contain two distinct genomes.

奇美拉是 希腊神话 中狮首、羊身、 蛇尾 的神兽，科学家将正常人携带至少四组DNA的现象称之为奇美拉现象。 有科学家认为，此现象在人群中发生的频率很可能高达10%到15%。 [1] 嵌合体也被叫做奇美拉 (chimera)，是指由不同 基因型 的细胞所构成的生物体，可自发产生或人工产生。 1907年，德国 植物学家 和遗传学家H.温克勒把嵌合体比喻为希腊神话中狮首、羊身、蛇尾的神兽，这就是chimera一词的由来。 [2] 嵌合体可以分为两种， 同源嵌合体 是嵌合成分来自原属同 …