Nondisjunction and Karyotype

Question 1

What is a nondisjunction? When can a nondisjunction occur (there are two ways)?

Answer 1

Its an error in cell division
It can occur in meiosis when homologous fails to separate in anaphase I

Question 2

What is a karyotype? What information can a karyotype tell us?

Answer 2

A visual display of chromosomes
They can tell us information about the individuals composition

Question 3

What are some chromosomal abnormalities that can occur in humans? Do these abnormalities affect autosomes or sex chromosomes?

Answer 3

Down syndrome, turner syndrome, Klinefelter syndrome, Cri du chat syndrome
Can in fact affect autosomes