Twins develop from two separate fertilized eggs and share percent of their genes.

Dizygotic twins develops from two separate fertilized eggs and share 50 percent of their genes.

Further Explanation:

Genotypes help in the genetic makeup of any individual.Phenotype describes as a physical characteristic of an individual. Genotype responsible for the phenotypes of any individual.

Twins are of two types:

In monozygotic twins only one egg and sperm fertilized and form identical twins.In this fertilized egg divide into two parts and they have same genetic makup .They share 100% similar gene.

In dizygotic twins two eggs released in one cycle and fertilized with two sperm.They form dizygotic or fraternal twins. They share 50% of smiliarities between gene and they are like sibling born at different time.

Factor that increase increase the probability of twins are :

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Answer Details:

Grade: High School

Subject: Biology

Chapter: Reproductive system

Keywords:

Twins, monozygotic, dizygotic, egg, sperm, fertility, heredity, identical, sibling, genetic makeup, genotype, phenotyp, fraternal,gene IVF.