Animal reproduction Flashcards
How long is the average gestation period in humans?
9 months
When an embryo has developed a full set of organs, what is it called?
A foetus.
What is the average amount of time for embryos to develop a full set of organs for humans?
8 weeks.
What is the situation where a baby is born early and small called?
Premature.
What is the alternative name for sex cells?
Gametes.
What are the male and female gametes called?
Sperm cells (male)
Egg cells (female)
What is it called when the nuclei of the sperm cell and the egg cell fuse?
Fertilisation.
What is External Fertilisation?
When fertilisation happens outside of the body.
Which type of fertilisation is common in human reproduction?
Internal fertilisation.