Multiple Choice
Non-disjunction means that chromosomes:
a) Do not cross over during synapsis.
b) Do not replicate during interphase.
c) Have serious mutations.
d) Do not separate correctly from one another during anaphase.
12. Meiosis
Genetic Variation During Meiosis
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Crossing over occurs during __________.
A
cytokinesis
B
metaphase I
C
prophase II
D
metaphase II
E
prophase I
Verified step by step guidance1
Understand that crossing over is a process where homologous chromosomes exchange genetic material, leading to genetic variation in gametes.
Recall that meiosis is divided into two main stages: Meiosis I and Meiosis II, each with its own phases: prophase, metaphase, anaphase, and telophase.
Focus on Meiosis I, where homologous chromosomes pair up and exchange segments. This is crucial for genetic diversity.
Identify that crossing over specifically occurs during Prophase I of Meiosis I, when homologous chromosomes form tetrads and exchange genetic material.
Recognize that the other options (cytokinesis, metaphase I, prophase II, metaphase II) do not involve the process of crossing over.
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