Describe The Process of Fertilisation in Human Being

Answer:

• Fertilisation is a complex sequence of steps that is achieved in 24 hours

• The molecular events in fertilisation involve:

1. Merging of a sperm (obtained from male) and ovum (obtained from female). Fusion between female gamete and male gamete describes the process of fertilisation

2. Secondly, pronuclei fusion occurs

3. Paternal and maternal chromosomes intermingle with each other

4. The resultant of fertilisation is the creation of a zygote (diploid/2n)

• The significant basic prerequisites to achieving the fertilisation process are:

1. Maturation of oocyte

2. Sperm activation

• Fertilization takes place at the distal third segment of the fallopian tube i.e. the ampulla of the oviduct

• Millions of sperm try to reach and fertilize the ovum but the most chemically compatible sperm once it enters the ovum, is followed by various immediate actions that stop further penetration of the ovum

• The zygote develops into a new organism