Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
Each of the following events occurs during mitosis except _______.
A
condensation of chromatin into visible chromosomes
B
crossing over between homologous chromosomes
C
separation of sister chromatids
D
alignment of chromosomes at the metaphase plate
Verified step by step guidance
1
Understand the process of mitosis: Mitosis is a type of cell division that results in two genetically identical daughter cells. It consists of several stages: prophase, metaphase, anaphase, and telophase.
Review the events listed in the problem: Condensation of chromatin into visible chromosomes occurs during prophase, alignment of chromosomes at the metaphase plate occurs during metaphase, and separation of sister chromatids occurs during anaphase.
Clarify the concept of crossing over: Crossing over is a process where homologous chromosomes exchange genetic material. This event occurs during meiosis (specifically in prophase I) and not during mitosis.
Compare mitosis and meiosis: Mitosis is focused on producing identical cells for growth and repair, while meiosis is involved in producing gametes with genetic variation. Crossing over is unique to meiosis and does not occur in mitosis.
Identify the correct answer: Based on the information above, the event that does not occur during mitosis is 'crossing over between homologous chromosomes.'