During in Vitro Fertilization,the Fertilized Egg ____

Question

During in vitro fertilization,the fertilized egg ____.
A) is enucleated and fused with a donor egg
B) develops in a Petri dish to form an embryo containing 64 to 128 cells
C) develops in a Petri dish to form an embryo containing four to eight cells
D) develops in the host animal and eventually results in a clone born to the host
E) undergoes a second fertilization with a donor animal's sperm

Accepted Answer

During in vitro fertilization, the fertilized egg develops in a Petri dish to form an embryo containing four to eight cells before being implanted into the host animal. It is not enucleated, fused with a donor egg, or undergoes a second fertilization. The embryo also does not develop into a clone born to the host, as it is genetically unique.