Before the process of mitosis can start, which must occur? A.DNA replication B.RNA transcription C.protein translation D.microtubule formation

Which is the correct order for sexual reproduction? A. meiosis-meiosis B. meiosis-mitosis C. mitosis-meiosis D. mitosis-mitosis

In meiosis, what is true about the four daughter cells? A. The daughter cells have identical genetic information. B. The daughter cells are the result of one parent cell dividing. C. The daughter cells are the result of two parent cells dividing. D. The daughter cells have a quarter of the chromosomes found in the parent cell.

Which most accurately describes what must come immediately before the separation of sister chromatids? A. DNA replication must occur. B. Spindle fibers must attach to the chromosomes. C. Spindle fibers must attach to the cell membrane. D. Sister chromatids must attach to each other in the middle of the cell.

Which process occurs in the first stage of meiosis, but not in mitosis? A. DNA is replicated. B. RNA is transcribed. C. Sister chromatids are separated. D. Homologous chromosomes are separated.

Down Syndrome occurs when an individual has three of chromosome 21. Which best explains the cause of Down Syndrome? A. During crossing over, DNA strands become tangled leading to three stranded DNA. B. During DNA replication, a chromosome is incorrectly replicated one additional time. C. During meiosis, either homologous chromosomes or sister chromatids fail to separate. D. During mitosis, either homologous chromosomes or sister chromatids fail to separate.

Which is an example of the result of asexual reproduction? A. A turtle hatches from an egg. B. Twins are born to a mother panda. C. A hybrid plant is created through bee pollination. D. A new plant is created from cuttings of a parent plant.

Which best explains why cells that have undergone mitosis are diploid? A. Cell division happens once, and DNA replicates after the division. B. Cell division happens once, and DNA replicates before the division. C. Cell division happens twice, and DNA does not replicate before the first division. D. Cell division happens twice, and DNA does not replicate before the second division.

Which explains the difference between asexual and sexual reproduction? A. Asexual reproduction requires two parents to produce an offspring. B. Sexual reproduction requires only one parent to produce an offspring. C. Asexual reproduction uses meiotic cell division, and sexual reproduction uses mitotic cell division. D. Asexual reproduction uses mitotic cell division, and sexual reproduction uses meiotic cell division.

How does nondisjunction affect sexual reproduction? A. Abnormal numbers of chromosomes may be found in gametes. B. Chromatids cross over during meiosis, decreasing the numbers of chromosomes. C. Genes fail to replicate during mitosis, causing mutation in the cell. D. Chromosomes separate at the centromere and divide into chromatids.