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Heredity and Evolution Part – II – Sex Determination

Heredity and Evolution Part – II – Sex Determination|Class 10 Science Notes

We have already discussed the previous article on Chapter – 9 
What are Heredity and Evolution? from class 10 science, but in this article, we will discuss the topic of Sex Determination.
Factors considered determining Sex
1 Environmental Fact
In some animals, the temperature at which eggs are fertilized determined the gender.
2 Genetic
In some animals class 10 science Heredity and evolution Part II
Sex chromosome
In human beings, there are 23 pairs of chromosome. Out of these 22 chromosome pairs are called autosomes and the last pair of the chromosome that help in deciding the gender of that individual is called the sex chromosome.
XX- Female chromosome
XY- Male chromosome
The human gender can be determined by the pair of the chromosome called a sex chromosome.

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