WorksheetsMitosis and Meiosis Review
Total questions: 10
Worksheet time: 5mins
If a cell has 24 chromosomes at the beginning of meiosis, how many chromosomes will it have at the end of meiosis?
A.12
B.24
C.48
D.64
The sorting and recombination of genes during reproduction is important to evolution because these processes
a. decrease variation and help maintain a stable population
b. increase variation that enables species to adapt to change
c. decrease the chances of producing offspring that are adapted to the environment
d. increase the ability of all the offspring to adapt to the environment
Sponges are important in aquatic ecology and they are capable of reproducing both sexually and asexually. What is an advantage to a species, such as the sponge, of being able to reproduce sexually?
A. Sexual reproduction increases genetic variation within a species.
B. Sexual reproduction produces offspring that are genetically identical to the parents.
C. Sexual reproduction allows the zygote to have twice the number of chromosomes of the parent.
D. Sexual reproduction produces a genetically improved zygote from the mutation of the parents' haploid gametes.
During meiosis I, cells begin to divide in a way that is very similar to the process of mitosis. However, what major
event takes place in meiosis I that does not occur in mitosis?
A. crossing over
B. chromosome replication
C. interphase
D. mutation
The diagram below summarizes the stages of the cell cycle. Which of the following occurs during mitosis?
A. The cell membrane pinches on cell into two.
B. The chromosomes of the parent cell are copied.
C. The parent cell takes in nutrients and doubles in size.
D. The nucleus of the parent cell divides into two nuclei.
The process below is necessary for reproduction in animals and in many plants.
At the end of this process, there will be a production of:
A. Four zygotes that will develop into embryos
B. Embryonic cells that could unite and develop into an organism
C. Four cells that will recombine to form two offspring
D. Gametes that could be involved in the formation of a zygote.
Which of the following best compares the processes of mitosis and meiosis?
A. Mitosis involves one division and results in diploid daughter cells, while meiosis consists of two divisions and results in haploid gametes.
B. Mitosis involves one division and results in haploid gametes, while meiosis consists of two divisions and results in diploid daughter cells.
C. Mitosis involves two divisions and results in diploid daughter cells, while meiosis consists of one division and results in haploid gametes.
D. 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 explains why meiosis results in greater genetic diversity than mitosis?
A. After meiosis, daughter cells are diploid and have twice as much genetic material, which can be divided in many more possible combinations.
B. After meiosis, haploid daughter cells are fertilized, which doubles their number of chromosomes and increases the number of possible genes.
C. During meiosis, homologous chromosomes randomly separate from each other (independent assortment), which allows for a wide variety of possible combinations of chromosomes in the resulting sex cells.
D. During meiosis, more daughter cells are produced, which increases the likelihood that fertilization will occur.
Cells must be small in order to maintain a high surface area to volume ratio. As a result of this, cells must divide by going through the cell cycle. This cycle is highly regulated. If the genes that control the regulation of the cell cycle are mutated, it can cause cells to grow uncontrollably. What is the name of the disease that results from this uncontrolled cell growth?
A. AIDS
B. Cancer
C. Down’s syndrome
D. Hyperglycemia
Crossing-over contributes to the recombination of genetic material in offspring. When does crossing-over happen during meiosis?
A. When the DNA of the diploid cell is copied
B. When homologous chromosomes move to opposite ends of the dividing cell during Telophase I
C. When spindle fibers move the chromosomes toward the midline of the dividing cell during Metaphase I
D. When homologous chromosomes pair and portions of chromatids break off and are exchanged during Prophase I
