Chromosome Mutations

Question 1

What is non-disjunction

Answer 1

Where the chromosomes of chromatids do not split equally during anaphase, resulting in gametes and zygotes being formed with the incorrect number of chromosomes

Question 2

What are the two types of non-disjunction

Answer 2

-Polyploidy
-aneuploidy

Question 3

What is polyploidy

Answer 3

-Fatal in humans as the zygote cannot successfully develop into a foetus but it occurs frequently in plants
-In polyploidy every chromosome is affected and so you have an extra copy of every chromosome