Embryo

For an IVF sequence question, use the precise order: hormones → several eggs mature → eggs collected → fertilisation in the laboratory → embryos develop → one or two embryos inserted into the uterus.

When evaluating fertility treatment, link each issue to a consequence. For example, transferring more than one embryo can cause a multiple pregnancy, increasing health risks to the mother and babies.

For embryo transplants, state that the embryo is divided before its cells become specialised and that the resulting embryos are placed into host mothers.