Multiple Choice
During telophase II of meiosis, which event most directly occurs as cells complete the division process?
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9. Mitosis and Meiosis
Meiosis
Multiple Choice
In meiosis I, what is a tetrad?
A
A group of four sister chromatids from a single replicated chromosome
B
A structure made of four nonhomologous chromosomes aligned at the metaphase plate
C
A set of four chromosomes found in a haploid gamete after meiosis II
D
A paired set of homologous chromosomes (a bivalent) consisting of four chromatids formed during prophase I
Verified step by step guidance1
Understand that meiosis I is the first division in meiosis where homologous chromosomes pair up and separate.
Recall that each chromosome has already been replicated during interphase, so each consists of two sister chromatids.
Recognize that during prophase I, homologous chromosomes pair closely together, forming a structure called a tetrad.
Define a tetrad as a paired set of homologous chromosomes (also called a bivalent), which includes four chromatids in total (two from each homologous chromosome).
Note that this tetrad structure is crucial for crossing over and genetic recombination before the homologous chromosomes separate in meiosis I.
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