Multiple choice

Identical twins arise when two

  1. cells develop independently from the same zygote

  2. gametes develop independently

  3. ova develop independently

  4. sperms develop independently

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Identical (monozygotic) twins develop from a single fertilized egg (zygote) that splits into two embryos, each developing independently. They don't come from separate gametes, ova, or sperm - those would produce fraternal (dizygotic) twins or separate siblings.