-Monozygotic (MZ) twins, also called identical twins, occur when a single egg cell is fertilized by a single sperm cell. The resulting zygote splits into two very early in development, leading to the formation of two separate embryos.Because these twins come from one zygote, they're also known as monozygotic. Identical twins are the same sex.
Fraternal twins develop from?
Two Zygote
Sometimes a woman's ovaries release 2 eggs, and a separate sperm fertilises each egg. This forms twins. These twins are called fraternal twins, dizygotic twins (meaning two zygotes) or non-identical twins.Fraternal twins are siblings who develop from separate eggs and separate sperm cells, but during the same fertilization period. So they end up being conceived at the same time, developing at the same time, and being born at approximately the same time.
Answers & Comments
Answer:
Fraternal twins develop from
zygote(s).
Explanation:
Identical twins develop from the same zygote, hence why they are identical. Fraternal twins are not identical and therefore do not.
Verified answer
Identical twins develop from?
One Zygote or Monozygotic (MZ)
-Monozygotic (MZ) twins, also called identical twins, occur when a single egg cell is fertilized by a single sperm cell. The resulting zygote splits into two very early in development, leading to the formation of two separate embryos. Because these twins come from one zygote, they're also known as monozygotic. Identical twins are the same sex.
Fraternal twins develop from?
Two Zygote
Sometimes a woman's ovaries release 2 eggs, and a separate sperm fertilises each egg. This forms twins. These twins are called fraternal twins, dizygotic twins (meaning two zygotes) or non-identical twins. Fraternal twins are siblings who develop from separate eggs and separate sperm cells, but during the same fertilization period. So they end up being conceived at the same time, developing at the same time, and being born at approximately the same time.