GED Science : Meiosis
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Example Questions
Example Question #3 :Biology And Life Sciences
Which of the following events does not take place during both mitosis and meiosis?
The condensing of chromosomes
Separation of sister chromatids
Dissolving of the nuclear membrane
Crossing over between non-sister chromatids
Crossing over between non-sister chromatids
Crossing over is an event that recombines DNA between homologous, non-identical chromosomes. The result is an increase in genetic variation because the resulting daughter cells have slightly different genetic combinations than the original parent cell. Crossing over only occurs during meiosis. This is because homologous chromosomes are only in adjacent positions during prophase I. Crossing over cannot occur during mitosis because this alignment is never present; daughter cells of mitosis are always genetically identical to the parent cell.
Sister chromatids separate during anaphase of mitosis and anaphase II of meiosis. Chromosomes condense and the nuclear membrane dissolves during prophase of mitosis and prophase I of meiosis.
Example Question #1 :Meiosis
Which of the following statements about meiosis is correct?
Meiosis occurs in all of the body's cells
Meiosis produces diploid cells
Meiosis supports asexual reproductive strategies
Meiosis increases genetic diversity through crossing over and independent assortment
Meiosis produces four daughter cells that are genetically identical to the original parent cell
Meiosis increases genetic diversity through crossing over and independent assortment
Meiosis allows for increased genetic variation through crossing over and independent assortment. These processes result in daughter cells that are non-identical to the original parent cell. Crossing over describes the exchange of portions of DNA between homologous chromosomes, generating unique allelic combinations. Independent assortment means that the daughter cells of meiosis will have a mixture of genetic material from each set of the organism's alleles, representing DNA from both the mother and father sets of genes. The product of meiosis is four daughter cells that are genetically unique.
Each daughter cell of meiosis has only one copy of each gene, meaning that they are haploid. Only gametes (sex cells) undergo meiosis, allowing for sexual reproduction. The fusion of two haploid gametes results in a diploid cell.
Example Question #1 :Cells And Life
Mitosis and meiosis are both processes by which cells reproduce.
Which of the following is not true about meiosis?
Meiosis produces haploid cells.
Meiosis produces gametes.
Cells undergoing meiosis divide twice.
Meiosis produces identical somatic cells.
Meiosis produces 4 unique daughter cells.
Meiosis produces identical somatic cells.
Meiosis is the process that creates gametes (eggs and sperm). The cell divides twice, creating 4 unique daughter cells that contain half (haploid) of the genetic information of the parent cell. Somatic cells are body cells and they are produced via mitosis.
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