Synapse is the correct answer :)
The X can possibly be the sex chromosome. Like for human female we have the XX chromosomes and when the allele is on the X chromosome we write as X with a R as the superscript on top right.
Answer:
What grade for this is it
A new born has soft spot on he top of its head. This is called as fontanelle and is diamond in shape present on the top of the head of the baby.
Babies skull is very soft and can be very easily moulded, to help them squeeze through the birth canal at the time of delivery.
Moulding is done in the skull of the babies as it is most largest part of the body during the time of delivery.
As soon as the skull and bones of the baby meet and fuse they become hard gradually.
