All animal types have a different number of chromosomes not just mammal, birds, and fish.
123 chromosomes
76 Chromosones.
23 chromosones
It varies from species to species in human there are 46 chromosomes (23 pairs)
64 (32 pairs)
They are called chromosones
A molar pregnancy is an abnormally fertilized egg. Molar pregnancies occur when the fertilized egg does not have any of the mother's chromosones, or the father's chromosones duplicate.
When the process meiosis creates new gametes (sex cells), each gamete has haploid, or n chromosones (half the number of other cells), which means that each gamete has 23 chromosones. Chromosones come in pairs, and when meiosis occurs it randomly picks one chromosone from each pair, which is what causes variation. We inherit 23 chromosones from each parent as well, so that adds to the variation even more. Chromosones and alleles are both found in the same place. Hope that was what you were looking for.
When a horse and a human mate and their chromosones thingys match.
Karl Willhelm, a Swiss Botanist
Chromosones become visible during prophase.
Uh, one mouse.