U6 Study guide Flashcards
The typical human body cell contains 46 chromosomes. How many chromosomes are found in a typical human sperm?
23
What is the role of the spindle fibers?
Align and separate chromosomes
During which phase of meiosis do homologous pairs of chromosomes line up next to one another along the equator?
Metaphase 1
Description of anaphase 2?
The centromeres separate, the 2 chromatids of each chromosome move to opposite poles on the spindle. The separated chromatids are now called chromosomes.
The cell cycle is divided into interphase and mitosis.
False
In plant cells, cytokinesis begins with a furrow that pinches the cell.
False
During meiosis 1, homologous chromosome pairs are separated when the centromeres split apart.
True.
Why is synthesis stage called this?
Protein or dna synthesis happens.
By the end of prophase, each of the following has occurred except what?
Lining chromosomes up in the cell.
Which of the cells depicted in the line graph are most likely cancerous?
A
DOTTED LINE
A cell has 12 chromosomes. How many chromosomes will each daughter cell have?
12
The cell cycle is regulated by what?
Checkpoints during G1, G2 and M
Dna replication occurs during what phase?
Interphase.
Crossing over would most likely occur during which stage of the cell cycle?
Prophase 1
The typical growth period of a cell occurs during which stage?
Interphase
