During the process of fertilisation, haploid sperm and egg cells fuse together to form a diploid zygote.
Define the term 'haploid'.
There are certain advantages to cells being diploid.
List two advantages of cells containing two sets of chromosomes.
A couple is expecting a child and wondering which sex the baby will be.
The following genetic diagram shows the sex chromosomes present in the gametes of both parents.
Gametes | X | X |
X | ||
Y |
Calculate the percentage chance of the baby being a girl by completing the genetic diagram.
Show your working.
One of the genes carried on the X chromosome codes for a protein called factor VIII.
State the role of this protein in humans.
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