Mitosis vs Meiosis
Produces 4 cells
Meiosis
What do Punnett squares predict?
What are Offspring traits/genotypes?
What is a ratio?
What is comparison of numbers
What is genetic variation?
What are differences in DNA between individuals
What does polyploidy mean?
Extra sets of chromosomes
Used for growth and repair
Mitosis
Aa × Aa genotype ratio
1 : 2 : 1
Genotype ratio for Aa × Aa
1 : 2 : 1
Name one process that increases variation?
What is crossing over OR independent assortment
What is diploid?
2 sets of chromosomes
Cells are genetically different
What it Meiosis?
Aa × Aa phenotype ratio
3 : 1
Why is phenotype 3:1 instead of 1:2:1?
Dominant allele masks recessive
What is crossing over?
What is the exchange of DNA between chromosomes
What can separate linked genes?
Crossing over
Occurs in body (somatic) cells
What is Mitosis?
Aa × aa phenotype ratio
1 : 1
What happens to ratios with more trials?
Get closer to expected
When does crossing over occur?
Why is polyploidy common in plants?
Bigger/Stronger
Why does meiosis create genetic variation?
What is crossing over + independent assortment?
If offspring shows dominant trait, what are possible genotypes?
AA or Aa
What phenotype ratio comes from a dihybrid cross?
9 : 3 : 3 : 1
What is independent assortment?
Random separation of chromosomes
AB = 48, ab = 52, Ab = 2, aB = 3 → linked or independent?
Linked