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It depends on the type of twins
If It was identical (monozygotic) twins, one egg is fertilized (As you can see, identical twins have similarity in phenotype (the observable characteristic of an organism) because of development of one zygote divided into two embryos)
but if it was non-identical twins, two eggs or more (such as triplets or quadruplets) are fertilized. The twins have differences in phenotype
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoOne , the egg cell is split in half to make twins
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Which event can result in the birth of identical twins?
Two egg cells are each fertilized by separate sperm cells.
Why is it important that only one sperm fertilize an egg?
it is important for 1 sprem to fertilize a human egg (Ova) in order to start the conception process. If 2 sprem Cells fertilize the 2 DIFFERENT Ova the mother will have "Fraternal Twins". However, if 2 sperm cells fertilize the SAME Ova (egg) the mother will have "Identical Twins". I hope that is the answer you were looking for?
Do twins get an extra chromosome from 1 parent?
No. Having an extra chromosome is actually a genetic defect. With twins, let's assume they are identical twins, the mother has one egg cell in the fallopian tube ready to be fertilized by a sperm cell. The sperm cell fertilizes the egg cell, but that egg cell then undergoes mitosis. All of the cell contents are duplicated and the cell divides into two. You now have 2 cells with the exact DNA which are twins. In the case of fraternal twins, the mother had two separate ova in her fallopian tubes and both were fertilized by two different sperm cells.
How many chromosones does egg cells have?
23
Does the egg cell have many cells?
No, each egg cell is a single haploid cell. Once it is fertilised it divides into many different cells, which later on forms the foetus.
How many egg cells need to be pregnant?
Just one. If you have two egg cells, you may have twins.
What is it call when twins are fertilized into two separate cells?
Dizygotic twins. If they were fertilized in the same egg, they would be called monozygotic twins.
Identical twins happen when 2 egg cells are fertillised?
no. one egg is fertilized and it splits up later on.
Which event can result in the birth of identical twins?
Two egg cells are each fertilized by separate sperm cells.
Are non-identical twins occur when egg cells turns into embryos on their own?
No, non-identical twins are fraternal twins. They are created when two eggs are fertilized at the same time and become embryos. Identical twins are when a fertilized egg splits into two on its own.
What is the name for twins that aren't actually twins?
identical twins are single egg twins. fraternal twins a two egg twins. fraternal
Why are twins born same time?
Because two egg cells are in the uterus at the same time and maturing. Identical twins are one egg cell that separated, that's why some babies are born connected. Fraternal children are when two egg cells enter the uterus and mature at the same time. That's why they don't look identical.
The DNA fingerprints of fraternal twins will be the same?
No, faternal twins are created from two different egg cells. They have some similar genetic information however. Indentical twins on the other hand, would have identical fingerprints since they are created within one egg cell.
How many egg cells do bullfrogs produce?
it produces about 6 egg cells
Sexual reproduction is used in what?
sperm cells and egg cells
What is used in cell reproduction?
sperm cells and egg cells
If having twins how many chromosomes does each egg get?
2
