Tercer Ciclo del CEIP Riomanzanas

Homework for Wenesday

New page for the project:

FERTILISATION AND PREGNANCY

The fusing of a sperm cell and an egg cell which will develope into a zygote, and embryo , a fetus and finally a baby. Pregnancy lasts nine months (39-42 weeks)

You will need to explain what are: IDENTICAL TWINS, FRATERNAL TWINS AND TRIPLETS, QUADRUPLETS AND QUINTRUPLETS. Write two or three lines for each one and make sure that you explain how many sperm cells and eggs are involved in each case.

Cut out the pictures of the babies and stick them onto a new piece of paper. Write the information next to them.