Question

Why does fertilization takes place in human beings?​

Answer 1

QUESTION: Why does fertilization takes place in human beings?​

ANSWER:

• A pregnancy starts with fertilization, when a woman's egg joins with a man's sperm.
• Fertilization usually takes place in a fallopian tube that links an ovary to the uterus.
• If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.
• Fertilization occurs in the fallopian tube in humans.
• The sperms swim and come in contact with the zona pellucida.
• It releases hormones / secretions which induce changes in the membrane and hydrolyzes the ovum membrane.
• One sperm enters and blocks the entry of other sperms thereby ensuring only one sperm fertilizes the ovum and prevents polyspermy.
• Entry of sperm induces completion of second meiotic division forming ovum and second polar body.
• The haploid nucleus of sperm and that of ovum fuses.
• Formation of diploid zygote takes place thereby completing the process of fertilization.

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Answer 2

Answer:

See the below answer

Explanation:

A pregnancy starts with fertilization, when a woman's egg joins with a man's sperm. Fertilization usually takes place in a fallopian tube that links an ovary to the uterus. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.