Skip to main content
A-Factor STEM Studio
A-Factor
← Biology

Meiosis and genetic variation

Follow one DNA replication and two divisions. Compare homologous chromosome separation with sister chromatid separation.

Simulation
Meiosis and genetic variation: Before S phase · 2n = 42n = 4 · 4 DNA moleculesLong + short chromosomes · blue/coral parental origins

Investigate and explain

  1. Compare 2n = 4 before S phase with n = 2 after division I.
  2. Change orientation at metaphase I and track the short pair.
  3. Toggle crossing over and compare the marked segments in all four products.

Practice · question 1/3

What separates in meiosis I?

Choose once, then discuss your reasoning.

First attempts: 0/0

Assignment and explanation guide

Write a claim, support it with two observations from this activity, and explain one model limitation. Compare with a partner. A strong answer names the structures or processes, controls relevant variables and distinguishes the illustration from biological evidence.