Gametes and fertilisation in sexual reproduction
I can describe the role of gametes and fertilisation in sexual reproduction.
Gametes and fertilisation in sexual reproduction
I can describe the role of gametes and fertilisation in sexual reproduction.
Lesson details
Key learning points
- Sperm and egg cells are the sex cells of humans and are called gametes.
- Humans reproduce through sexual reproduction where half the genetic material of the offspring comes from each parent.
- Fertilisation occurs in the fallopian tubes when gametes join to form a zygote.
- Each gamete carries half the genetic material of the parent; a zygote has a full set of genetic material.
- The zygote divides to form a ball of cells called an embryo, which grows to form a foetus and then a baby.
Keywords
Gametes - The sex cells in humans, which are egg and sperm cells.
Sperm cell - The male gamete.
Egg cell - The female gamete.
Fertilisation - Occurs when a sperm and egg cell fuse together to form a zygote.
Embryo - Formed when a zygote divides to form a ball of cells.
Common misconception
Fertilisation occurs in the uterus and can happen at any time.
Fertilisation occurs in the fallopian tubes and this can only happen before the egg cell reaches the uterus.
Content guidance
- Depiction or discussion of upsetting content
- Depiction or discussion of sexual content
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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