Meiosis

Question 1

What does meiosis produce

Answer 1

4 genetically different haploid gametes for sexual reproduction

Question 2

What are the steps of meiosis

Answer 2

1: dna replication occurs
2: chromosomes condense and homologous chromosomes pair up at the equator
3: spindle fibres attach to centromere at the equator
4: first cell division occurs, chromosomes move to opposite poles and spindle fibres attach, chromosomes split and centromere doesn’t
5: second division-> products

Question 3

What are the 2 variation sin meiosis

Answer 3

Independent segregation
Crossing over

Question 4

What is independent segregation

Answer 4

Homologous chromosomes randomly pair up , so maternal and paternal chromosomes are shuffled in any combination

Question 5

What is crossing over

Answer 5

Crossing over exchanges parts of chromatids of homologous chromosmes creating a new allele combo
Overlap at chiasmata