#1
What is the purpose of meiosis in sexually reproducing organisms?
To reduce chromosome number
ExplanationMeiosis reduces chromosome number, ensuring that gametes have half the genetic material of the parent cell.
#2
What is the term for the physical exchange of genetic material between homologous chromosomes during meiosis?
Genetic recombination
ExplanationGenetic recombination refers to the exchange of genetic material between homologous chromosomes, promoting genetic diversity.
#3
Which of the following statements about meiosis is true?
Meiosis results in the formation of four haploid daughter cells.
ExplanationMeiosis involves two rounds of cell division, resulting in the formation of four haploid daughter cells, each with half the chromosome number of the parent cell.
#4
What is the term for the exchange of genetic material between non-sister chromatids during meiosis?
Crossing over
ExplanationCrossing over involves the exchange of genetic material between non-sister chromatids, promoting genetic diversity.
#5
During which stage of meiosis does crossing over occur?
Prophase I
ExplanationCrossing over occurs in Prophase I, allowing for the exchange of genetic material between homologous chromosomes.
#6
Which of the following contributes to genetic variation in meiosis?
Independent assortment of chromosomes
ExplanationIndependent assortment of chromosomes during meiosis creates genetically diverse gametes.
#7
Which of the following stages in meiosis is similar to mitosis?
Telophase II
ExplanationTelophase II is similar to mitosis as it involves the separation of sister chromatids.
#8
What is the significance of synapsis during meiosis?
It allows for the exchange of genetic material between homologous chromosomes.
ExplanationSynapsis during meiosis allows for the exchange of genetic material between homologous chromosomes, promoting genetic diversity.
#9
What is the significance of non-disjunction in meiosis?
It leads to the formation of gametes with abnormal chromosome numbers
ExplanationNon-disjunction in meiosis results in gametes with abnormal chromosome numbers, leading to genetic disorders.
#10
What is the main difference between meiosis I and meiosis II?
Meiosis I involves two rounds of cell division, while meiosis II involves only one round.
ExplanationMeiosis I involves homologous chromosomes pairing and crossing over, while meiosis II involves sister chromatids separating.