Genetics Review Punnet Squares, Probability, and Meiosis

You Don’t Have a Clue! Homozygous Allele Recessive Punnett Square GenePhenotype

You Don’t Have a Clue! Trait GenotypeDominant Fertilization Probability Heterozygous

You Don’t Have a Clue! Haploid Gamete Anaphase 2 XY InheritEgg cell

You Don’t Have a Clue! Heredity Male sex cell Results in 4 Haploid cells XX Prophase 1 Crossing over

Use Whiteboards to Draw Metaphase 1

Use Whiteboards to Draw Prophase 1

Use Whiteboards to Draw Crossing over

Use Whiteboards to Draw Anaphase 2

Use Whiteboards to Draw Telophase 2

Explain… 3 most important things that happen during PROPHASE 1

ANSWER 1. Nuclear membrane breaks down 2. DNA condenses into chromosomes 3. Crossing over

Explain… Key occurrences during ANAPHASE 2

ANSWER Sister chromatids SEPARATE, and move to opposite ends of the cell.

Explain… Outcome of TELOPHASE 2

ANSWER 4 cells (Gametes) that are HAPLOID (have only 1 copy of each chromosome)

Think Fast!!! What phase of MEIOSIS?

Key Vocab Terms Gene Genotype Phenotype Fertilization Allele Dominant Recessive Homozygous Heterozygous Probability Trait Gamete Meiosis (1 and 2) Haploid Diploid Sex chromosome