Sex Determination: Who is responsible for the gender of a new born baby?
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Welcome to our informative video where we delve into the fascinating world of chromosomes and unravel the mystery behind determining the sex of a child. Discover the fundamental building blocks of life – cells, which contain thread-like structures called chromosomes. Gain insights into human chromosomes, where each cell contains 46 chromosomes organized in 23 pairs. Explore the unique nature of sex chromosomes, the one pair that differs between males and females. Learn about the two types of sex chromosomes, namely X and Y, and their presence in male and female cells. Understand the crucial role of reproductive cells – sperm and eggs – which carry only 23 chromosomes, one from each pair. Witness the process of fertilization, where the combination of a sperm cell and an egg cell forms a zygote with 46 chromosomes, ultimately developing into a baby. Uncover the connection between the presence of certain sex chromosomes and the determination of a child’s sex. Expand your knowledge on the influence of male reproductive cells in determining the gender of a child. Watch this video to gain a deeper understanding of chromosomes and the fascinating world of human reproduction.
chromosomes and cells, sex chromosomes, X and Y chromosomes, reproductive cells, sperm and eggs, zygote development, determining child’s sex, male and female chromosomes, sex determination in humans, genetic inheritance, human reproduction, understanding chromosomes, child gender determination, biology of reproduction.Every organism is made from cells. Cells contain thread like structure known as chromosomes.
In humans, there are 46 chromosomes in each cell. And these chromosomes are found in pairs. So there are 23 pairs.
In male and female, all the pairs of chromosomes are same except one pair.
Chromosomes in this pair are called sex chromosomes.
Sex chromosomes can be of 2 types namely X and Y. In a male cell, both x and y chromosomes are present but in female cell 2 x chromosomes are present.
We know that male reproductive cells are known as sperm and female reproductive cells are known as eggs. reproductive cells are different from normal cells as they contain only 23 chromosomes. One from each pair.
When sperm cell and egg are combined together, they form a cell which has 46 chromosomes or 23 pairs. This new cell formed is called zygote and develops into baby.
Since reproductive cells have only 23 chromosomes, sperm cell can contain either x or y chromosome. And a egg cell will always have x chromosome. During reproduction, lot of sperm cells are released and only one sperm fertilises the egg.
when sperm containing Y chromosome fertilises the egg, resultant cell will have a sex chromosome containing x and y chromosome and the zygote will grow into a boy.
But when the sperm cell containing x chromosome fertilises the egg, resultant cell will have a pair of x chromosomes and the zygote will grow into a girl.
It is clear that a child will be a boy or girl , depends on male and not the female.
The sex of the baby depends on which chromosome he or she receives from the father. X chromosome from dad will result in a girl, Y chromosome from dad will give a boy. Both are of equal value, to be loved and treasured.
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