Multiple Choice
In humans, what type of cells does meiosis produce?
30
views
9. Mitosis and Meiosis
Meiosis
Multiple Choice
During metaphase I of meiosis, what is the key chromosomal event that occurs at the metaphase plate?
A
Homologous chromosome pairs (tetrads) align at the metaphase plate with sister chromatids still joined.
B
Homologous chromosomes undergo synapsis and crossing over to form chiasmata.
C
Nuclear envelopes reform around two sets of chromosomes and cytokinesis produces two haploid cells.
D
Sister chromatids separate and move toward opposite poles of the cell.
Verified step by step guidance1
Understand the stage of meiosis being discussed: metaphase I, which is part of the first division in meiosis where homologous chromosomes are prepared for separation.
Recall that during metaphase I, homologous chromosomes (each consisting of two sister chromatids) pair up to form structures called tetrads.
Recognize that these tetrads align along the metaphase plate, which is the central plane of the cell where chromosomes line up before being pulled apart.
Note that sister chromatids remain attached at their centromeres during metaphase I, meaning they do not separate yet; instead, the homologous chromosomes are the ones that will be separated.
Summarize the key event: homologous chromosome pairs (tetrads) align at the metaphase plate with sister chromatids still joined, setting the stage for their separation in anaphase I.
Related Videos
Related Practice
