Flea Pupa. The flea larvae spin cocoons around themselves in which they move to the last phase of the flea life cycle and become adult fleas. The larvae can remain in the cocoon anywhere from one week to one year. Temperature is one factor that determines how long it will take for the adult flea to emerge from the cocoon.
Nondisjunction causes chromosomal disorders because sometimes an error in meiosis occurs when homologous chromosomes fail to separate which results in the organism receiving t â¦ he wrong number of chromosomes thus having a chromosomal disorder. 14 people found this useful.ondisjunction causes chromosomal disorders because sometimes an error in meiosis occurs when homologous chromosomes fail to separate which results in the organism receiving t â¦ he wrong number of chromosomes thus having a chromosomal disorder. 14 people found this useful.
Nondisjunction is the failure of homologous chromosomes or chromatids to segregate during mitosis or meiosis. Nondisjunction during mitosis can result in cancer. Nondisjunction during meiosis results in one daughter cell having both of a pair of parental chromosomes with the other having none. It causes a mutation in the number of chromosomes, either extra chromosomes or missing chromosomes. Nondisjunction during meiosis can cause chromosomal disorders, such as trisomy 21 (Down syndrome), Turner's syndrome, and Klinefelter's syndrome.