Your question is not clearly worded.
I think you are looking for the term karyotype which is the characteristic chromosome complement of a species. In humans there are 23 chromosomes.
Chromosome 23 has an X and X or X and Y chromosome which are the sex chromsomes. XX being female and XY being male.
What is the 23 pair of chromosomes in a human cell called?
Why are they important?
Their are the sex chromosomes.
They affect the gender.
can you check my answer please ,and help me with an answer
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