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
Two egg cells are each fertilized by separate sperm cells.
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.
Ten spermatozoa will be produced from ten spermatids. Egg cells are not formed from spermatids.
to be fertilized and used for reproduction of the plants
It is important that only one sperm fertilizes an egg to ensure the correct number of chromosomes in the resulting embryo. If multiple sperm were to fertilize the egg, it would lead to an abnormal number of chromosomes, resulting in genetic disorders and potential miscarriage.
Just one. If you have two egg cells, you may have twins.
Dizygotic twins. If they were fertilized in the same egg, they would be called monozygotic twins.
no. one egg is fertilized and it splits up later on.
Two egg cells are each fertilized by separate sperm cells.
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.
identical twins are single egg twins. fraternal twins a two egg twins. fraternal
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.
2
it produces about 6 egg cells
sperm cells and egg cells
sperm cells and egg cells
identical twins are from the same egg cell that split, but ferternal twins are from 2 entirely different fertilized egg cells. Thus identical look the same and ferternal can look entirely different.