EOC Mitosis and Meiosis

Meiosis occurs in two phases. During the first phase, the ___________________ separate. During the second phase, the ____________________________ separate and the DNA in the resulting four cells are haploid.

• homologous chromosomes; sister chromatids

• sister chromatids; homologous chromosomes

• tetrads; sister chromatids

• sister chromatids; cells

Crossing-over contributes to the recombination of genetic material in offspring. When does crossing-over happen during meiosis?

• When the DNA of the diploid cell is copied

• When homologous chromosomes move to opposite ends of the dividing cell during Telophase I

• When spindle fibers move the chromosomes toward the midline of the dividing cell during Metaphase I

• When homologous chromosomes pair and portions of chromatids break off and are exchanged during Prophase I

Which of the following best explains why meiosis results in greater genetic diversity than mitosis?

• After meiosis, daughter cells are diploid and have twice as much genetic material, which can be divided in many more possible combinations.

• After meiosis, haploid daughter cells are fertilized, which doubles their number of chromosomes and increases the number of possible genes.

• During meiosis, homologous chromosomes randomly separate from each other (independent assortment), which allows for a huge number of possible combinations of chromosomes in the resulting sex cells.

• During meiosis, more daughter cells are produced, which increases the likelihood that fertilization will occur.

Which of the following best compares the processes of mitosis and meiosis?

• Mitosis involves one division and results in diploid daughter cells, while meiosis consists of two divisions and results in haploid gametes.

• Mitosis involves one division and results in haploid gametes, while meiosis consists of two divisions and results in diploid daughter cells.

• Mitosis involves two divisions and results in diploid daughter cells, while meiosis consists of one division and results in haploid gametes.

• Mitosis involves two divisions and results in haploid gametes, while meiosis consists of one division and results in diploid daughter cells.

Which of the following best describes meiosis?

• It is carried out in all tissues that require cell replacement.

• It occurs only in cells in the reproductive structures of organisms.

• It happens in all tissues except the brain and spinal cord.

• It is the first stage of mitosis.

Mitosis and meiosis are processes involved in cellular reproduction. Which of the following describes and event that results from mitosis but NOT meiosis?

• two stages of cell division

• replication of cellular genetic material

• daughter cells that are identical to the parent cell

• four daughter cells that are produced from each parent cell

Tags

NGSS.HS-LS1-4

A scientist wants to change the DNA of a sexually reproducing organism and have the new DNA present in every cell of the organism. In order to do this after fertilization, she would change the DNA in which of the following?

• zygote

• placenta

• testes of the father

• ovaries of the mother

Tags

NGSS.HS-LS3-2

Which row in the chart below indicates the correct process for each event indicated?

• row 1

• row 2

• row 3

• row 4

Tags

NGSS.HS-LS1-4

What is the name of this process?

• meiosis

• mitosis

• endocytosis

• phagocytosis

Tags

NGSS.HS-LS1-4

The diagram shows homologous chromosomes during prophase I of meiosis. Which of the following correctly describes the process being illustrated?

• mutation in which the DNA content of the gene is altered

• segregation of sister chromatid

• condensation and segregation of alleles

• crossing-over in which alleles are exchanged