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Sex is determined by the sperm cell that fertalized it. The egg supplies an X chromosome, and the sperm cell supplieds an X or a Y chromosome. If the result is XX, it is female, if it is XY, it is male.

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14y ago
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12y ago

In humans, the presence of a Y chromosome means the zygote will be male.

So (normal) females will have XX - one X chromosome from each parent.

(Normal) males will have XY - an X chromosome from their mother and a Y from their father.

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14y ago

The sex is determined by the sex chromosomes - one pair out of the total of 23 pairs of chromosomes we inherit from our parents. These come in two versions, called "X" and "Y". In the normal case, I would inherit either two "X" chromosomes, in which case I would be a female, or an "X" and a "Y" chromosome, in which case I would be a male.

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14y ago

The presence of a Y chromosome. XX = female. XY = male.

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10y ago

Right at fertilization.

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Q: When is the the sex of a zygote determined?
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Related questions

What is the order of fertilization sex cells meiosis zygote mitosis?

The order would be: Meiosis -> sex cells -> fertilization -> zygote -> mitosis Meiosis creates sex cells, called gametes, which combine during fertilization to create a zygote. The zygote then undergoes mitosis.


Is a zygote a body cell or a sex cell?

a zygote is a stem cell


Is a zygote dibloid or haploid?

A zygote is diploid, it is formed by the union of a male sex cell (a sperm) and a female sex cell (an ovum) both of which are haploid.


What do the sex cells form when they are joined?

A zygote.


What happens with zygote?

A Zygote is the cell formed when two gamete (or sex cells) are joined by sexual reproduction. The zygote develops into the baby. The zygote is only the initial stage of the development of the offspring. Usually, a zygote if formed by an ovum and sperm. The ovum being the female sex cell and the sperm being the male's.


What does zygote and gamete mean?

A gamete is a sex cell: an egg or a sperm. A zygote is a fertilized egg cell.


What is the union of female and male sex cells?

The Zygote


What is the difference between 'sex-liked' and 'sex-determined'?

Sex-liked means liking sex and sex determined is the resolution to have sex.


What are the two sex cells that formed a zygote?

The sperm and the egg


How many pairs of sex chromosome in zygote of human?

23


When does a zygote develop?

A zygote is developed during fertilization - a process that occurs when two haploid gametes (or sex cells) combine. In more general terms, the zygote is formed when the sperm meets the egg.


A zygote is best described as what?

A zygote is the initial cell developed through sexual reproduction and formed when two gametes come together. In other words, a zygote results when the female egg is fertilized. After rapid cell division, it eventually becomes an embryo.