30 Questions
In mitotic anaphase, what happens to the centromere and chromatids?
Centromere remains intact, chromatids separate
During metaphase, how many spindle fibers join a single chromosome from one pole?
One
What is the relationship between the length of mitotic anaphase and the other phases of mitosis?
Anaphase is the longest phase
If Anaphase Promoting Complex (APC) is defective in a human cell, what is expected to occur during mitosis?
Chromosome non-segregation
What happens immediately before the reformation of the nuclear envelope during the M phase of the cell cycle?
Chromosome separation in anaphase
Which phase contains chromosomes with half the number of chromatids compared to metaphase?
Anaphase
Which stage of the cell cycle is characterized by the initiation of DNA replication?
G1 phase
What is the distinctive feature of the Diakinesis stage in meiotic prophase?
Terminalization of chiasmata
During which phase does the centriole undergo duplication?
S-phase
In the context of meiosis, what event is associated with the Pachytene stage?
Crossing over
When does the attachment of spindle fibers to kinetochores become evident during cell division?
Metaphase
At which point do some dividing cells exit the cell cycle and enter the quiescent stage (G0) in the cell cycle?
G1 phase
What is the main characteristic of Prophase in mitosis?
Initiation of condensation of chromosomal material
During Prophase in mitosis, what happens to the Golgi complex, ER, nucleolus, and nuclear envelope?
They disappear completely
What is a key feature of chromosomes during Prophase?
They have single chromatids
Why is the initiation of assembly of the mitotic spindle significant in Prophase?
It is essential for chromosome condensation
What occurs at the start of Metaphase in mitosis?
Chromosomes align at the cell equator
Which structure do spindle fibers attach to during metaphase in mitosis?
Kinetochore of chromosomes
Which statement accurately describes the process of meiosis?
Meiosis ensures the conservation of a specific chromosome number in sexually reproducing organisms.
What happens during anaphase 2 of meiosis?
Sister chromatids do not separate.
Which of the following is an accurate comparison between mitosis and meiosis?
Meiosis forms gametes, whereas mitosis forms somatic cells.
In cell division, which stage is correctly matched with its characteristics?
Telophase - chromosomes move away and Golgi complex not present
How many meiotic divisions are necessary to form 100 pollen grains from microspore mother cells?
50
If a diploid cell at anaphase-I has 10 pg DNA in its egg cell, what would be the DNA content in the diploid cell?
$20$ pg
What is expected to occur if Anaphase promoting complex (APC) is defective in a human cell?
Chromosomes will not segregate
Which sequence of events correctly represents the stages during mitosis?
Condensation → Nuclear membrane disassembly → Arrangement at equator → Centromere division → Segregation → Telophase
When does DNA replication occur in bacteria?
Prior to fission
Which statement is correct regarding the cell cycle?
A cell in G1 phase has double the amount of DNA than a cell in G2 phase
When are homologous chromosomes separated during meiosis?
Prophase I
Which of the following is NOT an expected consequence of APC malfunction in a human cell?
Enhanced chromosome condensation
Test your knowledge on the characteristics of Prophase in mitosis. Questions cover topics such as chromosomal condensation, movement of centrioles, assembly of mitotic spindle, and cellular changes during Prophase.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
