How many total autosomes are present in a normal male or female karyotype? 22 or 44?

Question

matt101 · Answer

Autosomes are non-sex chromosomes. The sex chromosomes are X and Y (XX in females and XY in males). Humans have 46 chromosomes, two of which are sex chromosomes. The remaining 44 are all autosomes, so this would be your answer for a normal karyotype.

Side note: although there are 44 autosomes TOTAL, they can be divided into 22 homologous pairs of chromosomes, with one chromosome of each pair coming from each parent. So in reality, humans only have 22 "different" chromosomes (in addition to the sex chromosomes), but possess two "versions" of each, giving a total of 44 plus XX or XY.

anguyennn · Answer

Yes thank you but because the question is asking for total, it would be 44 right?

matt101 · Answer

Yes

anguyennn · Answer

and for haploid number would be n=23 and for diploid would be 2n=46 am i correct?

matt101 · Answer

Yes