Unit 1 D1 Research Paper

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Unit 1: D1 - Corrections

The human reproductive system contains all the relevant organs needed for reproduction. Conception occurs in the female's fallopian tube when a single male sperm meets one of the two females egg, which is called the ovum, which then fertilises the egg. The fertilised egg contains genetic material from both the mother and father, and this is when conception occurs and a new life begins.

Fertilisation occurs when an egg cell and a sperm cell meet and combine together. This can only happen after sexual intercourse or after a medical procedure such as IVF (In vitro fertilisation is a process of fertilisation that happens outside of the body, where a sperm and egg are put in a glass to fertilise with each other - babies are often referred to as test tube babies). Sperm cells travel in semen from the penis to the top of the female's vagina. Sperm enter the uterus through the cervix and travel to the egg tubes through the fallopian tubes. If a sperm and egg meet here, fertilisation 99% of the time will occur. In some cases fertilisation may not occur. The fertilised egg will divide multiple times to form a ball of cells which is referred to as an embryo. The embryo attaches itself to the lining of the uterus and begins to develop into a foetus and then into a baby. …show more content…
When fertilisation occurs the male and female chromosomes from these sex cells join together to form the new cell. This new cell is known as a zygote. The zygote will have its full 23

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