We all know that only one sperm can fertilize an egg.Then how twins are formed?is the same sperm fertilizes and forms twins or two sperms rarely fertilize an egg? this is my question answer me soon.
is your answer is right or wrong THANK YOU FOR ANSWERING..
2007-01-10 23:37:13 · 5 answers · asked by Anonymous in Pregnancy & Parenting ➔ Pregnancy
Fraternal twins are made when two sperm fertilise two different eggs. Identical twins are formed when you have one egg and the cells divide to create two genetically identical individuals. Siamese twins occur when the cells do not properly seperate and so they are conjoined.
Have a look at this for more information http://en.wikipedia.org/wiki/Twin
2007-01-10 23:41:49 · answer #1 · answered by sticky 7 · 2⤊ 1⤋
It depends on what kind of twins you're talking about. For fraternal twins, two sperms fertlize two different eggs. For identical twins, one sperm ferlized one egg. But during the egg's cell division, it divided in two halves that then developed into their own, hence there are 2 of identical genes.
2007-01-11 00:16:37 · answer #2 · answered by mrs.izabel 6 · 0⤊ 0⤋
sometimes ovaries can produce more than 1 get at a time, this can happen more often as a woman gets older, if there are 2 eggs chances are they will both be fertilized.....and twins will be born....this is for fraternal twins.....indentical twins is when 1 egg splits and the genetic make up is identical hence "identical twins"
2007-01-10 23:47:30 · answer #3 · answered by misschicky 2 · 1⤊ 0⤋
Identical twins are the fertilization of one egg that splits and fraternal twins are the fertilization of two separate eggs.
2007-01-11 00:12:50 · answer #4 · answered by juicie813 5 · 0⤊ 0⤋
go on the link below and it explains it all really well in just 3 very short parahgraphs and is very easy to understand
2007-01-10 23:44:37 · answer #5 · answered by mummy to 3 miracles 5 · 0⤊ 1⤋