Question

match the type of twin with its correct description.
instructions
identical twins
conjoined twins
fraternal twins
two different eggs fertilized by two different sperm develop two embryos
the inner cell mass splits and two embryos develop
the inner cell mass splits incompletely but two embryos still develop

Explanation:

• Identical twins: The inner cell mass splits and two embryos develop. This is because identical twins come from a single fertilized egg (zygote) that splits.
• Conjoined twins: The inner cell mass splits incompletely but two embryos still develop. Conjoined twins occur when the split of the early embryo (from a single - cell zygote) is incomplete.
• Fraternal twins: Two different eggs fertilized by two different sperm develop two embryos. Fraternal twins result from two separate eggs being fertilized by two separate sperm.

Answer:

• Identical twins: the inner cell mass splits and two embryos develop.
• Conjoined twins: the inner cell mass splits incompletely but two embryos still develop.
• Fraternal twins: two different eggs fertilized by two different sperm develop two embryos.