What has one set of unpaired chromosomes?

Answer 1

Gammets of both the sexes have unpaired chromosomes. In meiotic cell division you get separation of pairs of chromosomes. So all the sperms contains 23 unpaired chromosomes in it. Half of them contains 'X' chromosome, leading to female baby after fertilization. Half contains 'Y' chromosome leading to male baby after fertilization. All the ova has 'X' chromosomes only. Nature has tremendous advantages by separating male and female sexes. And to reproduce is one of the basic instinct of all life forms. You can have two options to select from each pair of chromosomes. So it comes to be 2*2*2*2*........ 23 times. And same for both sexes, makes it 2*2*2*2.....46 times. So the figure comes to be 70368744177664. This number indicates that these many types of different brothers and sisters can be borne by the same human couple. So Nature can select the ones fit forsurvival.(Here you should remember the great Charles Darwin.) The statement given in most of the books of genetics that pairs of chromosomes are identical is false. Otherwise all of the human being would have been same. (Xerox copies like unicellular organisms.)

Answer 2

All haploid cells have unpaired chromosomes: eggs and sperm.

Answer 3

The cells in the last stage of meiosis