Prophase I and Homologous Chromosomes

Fill-in-the-blank flashcards covering the stages and key events of Prophase I from the lecture notes.

During leptotene, chromosomes become gradually visible and __________ of chromosomes continues.

compaction

In zygotene, chromosomes start pairing together in a process called __________.

synapses

The paired chromosomes in zygotene are called __________ chromosomes.

homologous

With the formation of the synaptonemal complex in zygotene, each pair of homologous chromosomes is called a __________.

bivalent

During pachytene, bivalent chromosomes split into similar chromatids called __________.

tetrads

Recombination nodules are the sites where crossing over occurs between __________ chromatids of homologous chromosomes.

non sister

Genetic recombination completes by the end of __________.

pachytene

In diplotene, recombined homologous chromosomes tend to separate except at crossing over sites, forming X-shaped structures called __________.

chiasmata

During diakinesis, __________ of chiasmata takes place.

terminalization

In diakinesis, myotic spindles assemble to prepare homologous chromosomes for separation, and both the nucleolus and __________ disappear.

nuclear envelope