S\u1ed1 \u0111\u00e1<\/strong><\/a> l\u00e0 h\u00ecnh th\u1ee9c c\u00e1 c\u01b0\u1ee3c l\u00f4 \u0111\u1ec1 cho ph\u00e9p ng\u01b0\u1eddi ch\u01a1i \u0111\u00e1nh nhi\u1ec1u c\u1eb7p s\u1ed1 kh\u00e1c nhau trong c\u00f9ng m\u1ed9t l\u01b0\u1ee3t, c\u00e1ch ch\u01a1i n\u00e0y g\u1ea7n gi\u1ed1ng v\u1edbi \u0111\u00e1nh l\u00f4 xi\u00ean \u1edf mi\u1ec1n B\u1eafc.<\/span><\/p><\/blockquote>\nC\u00e1 c\u01b0\u1ee3c s\u1ed1 \u0111\u00e1 c\u0169ng \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh nhi\u1ec1u ki\u1ec3u kh\u00e1c nhau trong \u0111\u00f3 c\u00f3 s\u1ed1 \u0111\u00e1 2 con, 3 con, 4 con v\u00e0 5 con. <\/span><\/p>\nTrong \u0111\u00f3 anh em ch\u1ec9 c\u1ea7n tr\u00fang 1 \u2013 2 c\u1eb7p l\u00f4 trong d\u00e0n s\u1ed1 l\u00e0 c\u00f3 th\u1ebb \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 chi\u1ebfn th\u1eafng v\u00e0 mang v\u1ec1 s\u1ed1 ti\u1ec1n c\u01b0\u1ee3c th\u01b0\u1edfng c\u1ef1c l\u1edbn.<\/span><\/p>\n