Differences of Egg & Sperm Cell Formation


Sperm cells and egg cells are, respectively, male and female reproductive cells. When they combine inside a woman's reproductive system, they begin gestating and eventually result in a baby. There are a wide variety of differences between these two kinds of cells, ranging from where they come from, what information they carry and how they function. Indeed, the only real similarity between them is that they rely on one another to create a life.

Formation Time

  • The raw materials for egg cells are formed when girls are still in utero. Every little girl is born with roughly 4 million eggs already in her system, which drop into her uterus once a month or so once she reaches sexual maturity. Sperm cells, on the other hand, are constantly being formed, dying (or being used), then being replaced, in a process that takes around three weeks.


  • Both sperm and egg cells are produced through meiosis. However, when a sperm cell finishes its second cycle, it is complete, meaning it cannot develop any more. Eggs, on the other hand, finish their development with the first meiosis cycle. When they drop into the uterus, they are halfway between the first and second cycle; the cycle doesn't complete until a sperm fertilizes it.


  • One of the key hormones used to create sperm is testosterone, while eggs have more estrogen. Both of these are key to the fetus's development, and both provide different secondary sexual features, such as deeper voices and wider hips, respectively. So, a female child will receive her female traits from the estrogen provided by the egg that created her while a male child will receive his male traits from the testosterone provided by the sperm.


  • While it is obvious to say that sperm develop in men and eggs develop in women, it is important to look the specifics of this process. When sperm develop, they move through the epididymis, which is a tightly-coiled tube in the testicles. As they do so, they are covered in a nutrient-rich fluid that helps them grow. Eggs, on the other hand, develop in a woman's ovaries and are stored in their first phase of meiosis until they are released into the fallopian tube for fertilization.

Related Searches


  • Photo Credit Chad Baker/Photodisc/Getty Images
Promoted By Zergnet

You May Also Like

  • What Is a Zygote?

    A zygote is produced when an egg and sperm meet. Timing is what differentiates a zygote from an embryo.

  • Components of Sperm

    All human beings began from the combination of an egg and a sperm cell. As gametes, sperm have a design unlike other...

  • What Cells Can Be Seen by the Human Eye?

    All known organisms are made up of cells. Some organisms are unicellular while others are multicellular. The human body, for instance, typically...

  • What Is the Function of an Egg Cell?

    Egg cells, or ova, are the cells utilized by female organisms to reproduce offspring. In contrast, the reproductive cells used by males...

  • Embryonic Development of a Frog

    Studying embryonic vertebrate development in the frog is useful because the frog possesses all of the basic characteristics of nonamphibious vertebrates. Because...

  • What Is the Diploid Number?

    The diploid number is the number of chromosomes required for two complete copies of the organism's genome (the entirety of its genetic...

  • What Is Double Fertilization in Angiosperms?

    Angiosperms are flowering plants that produce seeds enclosed within an ovary structure, or fruit. The process of double fertilization is common to...

  • What Flower Part Contains Egg Cells?

    Flowers or blooms contain egg cells in the female portion of the bloom called the pistil. Egg cells will create seeds to...

  • The Similarities Between a Sperm and an Ovum

    The human reproductive system is a complex network of cells, ducts, tubes and small organs. While the male and female have different...

  • How a Cell's Shape Affects Its Function

    From the moment a human zygote is formed, the cells are busy dividing and specializing into the many different types of cells...

Related Searches

Check It Out

This Is the Beauty Routine of a Yelp Sales Manager

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!