Question

Nondisjunction of chromosome can result in (pick only one).

a cell nuclei with two copies of a chromosome

nothing

a cell nuclei with three copies of a chromosome

a cell nuclei with no copies of a chromosome

a cell nuclei with no and three copies of a chromosome

Answer 1

Answer =

Nondisjunction of chromosome can result in

a cell nuclei with two copies of a chromosome nothing

Explanation = Nondisjunction is the process of failure of paired chromosomes to separate during cell division.

when a cell normally undergoes cell division , there is equally separation of chromosomes into daughter cell.

for example: if parent cell is haploid, it undergoes cell division, there is formation of two daughter cells, each consists of one chromosome.

when nondisjunction occurs, then there is abnormality of chromosome occurs.one the daughter cell contains 2 copies of chromosomes and other daughter cell contains nothing. because in this case there is failure of chromosome pair, so that both chromosomes go to one daughter cell and none go to other daughter cell.

hence

a cell nuclei with two copies of a chromosome nothing is correct option.