How is sex determined in human beings?

By environmental factors

By the presence of two different sex chromosomes

By the number of X chromosomes

By the type of fertilization

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Answer and Solution

Answer

B. By the presence of two different sex chromosomes

Solution:

In humans, sex is determined by the presence of two different sex chromosomes. Males have one X and one Y chromosome (XY), while females have two X chromosomes (XX).

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