When chromosomes fail to separate correctly in meiosis, what can occur?

chromosomes of the sex cell are halved

extra chromosomes are found in the sex cell

meiosis does not finish

Ochromosomes of the sex cell are doubled

extra chromosomes are found in the sex cell

Explanation:

Nondisjunction is a type of chromosome abnormality that leads to addition or loss of one or more whole chromosomes. Two homologous chromosomes fail to segregate and so move on into the same gamete cell. This results in half of the gamete containing two of the same chromosome while the other gamete have none. The individual will have three chromosomes that is normal homologous pair plus one extra chromosome.