Difference between zygote and fetus

Main difference

The main difference between the zygote and the fetus is that the zygote is the initial stage of prenatal development that promotes cell division, while the fetus is the final stage of prenatal development that supports the development of organs.

Zygote vs. Fetus

A zygote is a fertilized egg that forms after the fusion of the male sperm with the female egg, while a fetus is a point on the zygote that shows all the functional organs of a mature organism. A zygote is unicellular, on the other hand, the fetus is multicellular. A zygote is an early stage in development, while a fetus is the last and last stage of prenatal development. Both the zygote and the fetus have diploid cells. A zygote is formed as a result of the fusion of male and female gametes, while the fetus is formed from the zygote. A zygote is formed just after the fusion of the gametes, while a fetus is formed in the ninth week of development.In the case of the zygote, compaction and blastula formation takes place on the other hand in the fetal stage,

Comparative chart

Zygote Fetus
A zygote is that cell formed by the union of the ovum and the sperm. A fetus is a point on the zygote where it looks like a more human form.
Number of cells
The zygote is unicellular The fetus is multicellular
Cell type
Diploid cell Diploid cell
Training
A zygote is formed by the fusion of male and female gametes. A fetus is developed by the embryo.
Training period
A zygote forms after the fusion of two gametes. The fetal period is from week nine until birth.
Results formation
Blastula formation and compaction. Organ formation occurs
Location on the body
A zygote is found in the fallopian tube. A fetus is found in the womb.
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What is the zygote?

A zygote is a term used for the earliest stage of prenatal development. It occurs during sexual reproduction. It is also known as the first form of life. After the combination and karyogamy of the two haploid cells, a diploid zygote is formed. It contains the DNA of both parents. The zygote then begins to multiply and becomes an embryo through the process of cell division. A zygote lasts for a week and then develops into a blastocyst and many other stages of development. After a few days of conception, the zygote attaches itself to the mother’s uterus where it grows and develops. If we talk about the size of a zygote, a zygote consists of a single cell and can only be seen with the use of a microscope. The increase in size and volume does not occur until a zygote develops into an embryo. In this stage, there is no concrete, or there are visible developmental changes except for the division and reproduction of the original cells. Another phenomenon that occurs at this stage is the formation of twins or other multiples. Twins are formed when a zygote passes under multiple divisions.

What is the fetus?

A fetus is the term used for the last stage of development of an organism. The stages of the fetus come after the embryonic stages in which the organism is fully formed and ready to exit the uterus. The fetal stage usually begins at the gestational age of eleven weeks and since the zygote forms when the fetus is the last stage of development, at this stage the organs and development of the body are fully complete. The necessary organs and bones are already developed. Hair growth can be seen on the head and the eyelashes on the eyelid. Fetal movements and swallowing also begin inside the uterus. A characteristic of the fetus is also that it reacts to environmental conditions such as light and sound. The fetus is usually 30 millimeters long and about 1. 2 inches long. The fetus usually weighs about 8 grams. At this stage, the placenta is fully functional, and genitalia begin to form. The hands, feet, brain and other organs are also present but with minimal functions. The fetal period lasts until the birth of the organism. In the case of humans, the fetal period lasts from week eight to weeks 38-40. Nails also develop at this stage of development. Uncontrolled movements and contractions can be seen and felt due to muscle and brain development. The fetal period lasts until the birth of the organism. In the case of humans, the fetal period lasts from week eight to weeks 38-40. Nails also develop at this stage of development. Uncontrolled movements and contractions can be seen and felt due to muscle and brain development. The fetal period lasts until the birth of the organism. In the case of humans, the fetal period lasts from week eight to weeks 38-40. Nails also develop at this stage of development. Uncontrolled movements and contractions can be seen and felt due to muscle and brain development.

Key differences

  1. A zygote is the initial stage of development after fertilization, while the fetal stage occurs in the eighth and ninth week of gestation.
  2. In the case of the zygote, the organism remains a cell that undergoes many different divisions, on the other hand, a young man with a different body shape and functional organs is known as the fetus.
  3. In the excision process, the zygote can form twins while a fetus always undergoes its internal changes and completes its last moments of growth.
  4. A zygote can be seen with the use of a microscope, while a fetus can be seen from the ultrasound machine inside the mother’s uterus.
  5. A zygote is a single-celled organism, while a fetus is multicellular.
  6. The location of the zygote is the fallopian tube, while the location of the fetus is the uterus.
Final Thought

The conclusion of this article is that the zygote is a diploid, unicellular and the first stage of prenatal development located in the fallopian tube, on the other hand, a fetus is a diploid, multicellular, which has functional organs and the last stage of prenatal development. .

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