Overview
Prophase I is a critical phase in meiosis where homologous chromosomes undergo synapsis and crossing over. This process not only aligns the chromosomes but also facilitates the exchange of genetic material, leading to increased genetic variation in the resulting gametes. Understanding Prophase I is ...
Key Terms
Example: Meiosis occurs in the formation of sperm and egg cells.
Example: Humans have 23 pairs of chromosomes.
Example: One chromosome from each parent forms a homologous pair.
Example: Synapsis allows for crossing over to occur.
Example: Crossing over increases genetic diversity in offspring.
Example: Chiasmata are visible under a microscope during Prophase I.
Related Topics
Metaphase I
The stage following Prophase I where homologous chromosomes align at the cell's equator.
intermediateAnaphase I
The stage where homologous chromosomes are pulled apart to opposite poles of the cell.
intermediateGenetic Inheritance
The study of how traits are passed from parents to offspring, influenced by processes like crossing over.
advancedKey Concepts
SynapsisCrossing OverHomologous ChromosomesGenetic Variation