Meiosis Basics
What type of cells does meiosis produce?
Gametes (egg and sperm)
What happens to homologous chromosomes in Prophase I?
They pair up and undergo crossing over
Does DNA copy itself again before Meiosis II?
No
What process during Meiosis I increases genetic variation?
Crossing over
How many daughter cells are produced at the end of meiosis?
Four cells
What structure is formed when homologous chromosomes pair up in Prophase I?
A tetrad
What happens to sister chromatids during Anaphase II?
They separate and move to opposite poles
Why do we need meiosis?
To make reproductive cells (sperm and egg)
How does the chromosome number in daughter cells compare to the original cell?
It is reduced by half (haploid, n)
Why is crossing over important?
It mixes genetic information
In which phase do chromosomes align along the equator during Meiosis II?
Metaphase II
How does meiosis differ from mitosis in terms of genetic variation?
Meiosis makes different cells, mitosis makes identical cells
What happens during interphase before meiosis begins?
Chromosomes replicate
In which phase do homologous chromosome pairs align at the equator?
Metaphase I
What is the result of Telophase II and cytokinesis?
Four genetically unique haploid cells
What happens if meiosis makes a mistake?
It can cause genetic disorders