Twelve pair is the norm, but about 5% have one or more extra ribs.
12 pair
A human body usually has 12 pairs of ribs, but some have on extra pair that are not fully developed.
humans have 12 pairs of ribs which connect to the thoracic vertebrae
12 pairs of ribs (in most humans, at least!)
You have about 9 to 12 ribs. :)
12 pairs (for total of 24 ribs)
12 paris of body.
Humans have a dozen pairs of ribs.
twelve
11
46 chromosomes23 pairs
46, or 23 pairs
23 pairs of chromosomes, 46 in total.
There are 46 chromosomes in a human Karyotype.
There are 23 human chromosome pairs.
A normal human has 23 pairs of chromosomes.
46 (23 pairs)
23 pairs or 46 total
In a "normal" human autosome (normal cell, not a sex cell), there is 23 pairs of chromosomes.
46 chromosomes23 pairs
46, or 23 pairs
A normal human being has 23 chromosomes from each parent, giving them 23 pairs or 46 in total.
46 chromosomes, they are grouped into 23 pairs.
23 pairs of chromosomes, 46 in total.
There are 46 chromosomes in a human Karyotype.
In a human cell it would be 23 pairs.
There are 23 pairs of chromosomes in the human genome.