CELL CYCLE Flashcards
How does sexual and asexual reproduction differ?
a. SR - multicellular organisms, AR - unicellular organisms
b. SR - unicellular organisms, AR - multicellular organisms
c. SR - produces offspring identical to parents, AR - produces offspring with traits from both parents
d. SR - produces offspring with traits from both parents, AR - produces offspring identical to parents
D. SR - produces offspring with traits from both parents, AR - produces offspring identical to parents
Which characteristic is present in offspring produced by sexual reproduction, but is missing in offspring produced by asexual reproduction?
a. an identical copy of parent chromosomes
b. twice the number of parent chromosomes
c. only half the number of parent chromosomes
d. an independent assortment of parent chromosomes
D. an independent assortment of parent chromosomes
// There is only one parent in asexual reproduction
Cells at metaphase I
a. unpaired unduplicated chromosomes
b. unpaired duplicated chromosomes
c. paired duplicated chromosomes
d. loose mass of DNA strands
C. paired duplicated chromosomes
Cells just after anaphase II
a. unpaired unduplicated chromosomes
b. unpaired duplicated chromosomes
c. paired duplicated chromosomes
d. loose mass of DNA strands
A. unpaired unduplicated chromosomes
// During anaphase II, the sister chromatids of each chromosome are pulled apart to opposite poles of the cell. This separates the duplicated chromosomes into individual chromatids
Place the following steps in the correct order.
- sister chromatids separate
- chromosomes line up at the equator of the cell
- chromosomes form
- cytoplasm separates
a. 1 -> 2 -> 3 -> 4
b. 3 -> 1 -> 2 -> 4
c. 3 -> 2 -> 1 -> 4
d. 3 -> 1 -> 4 -> 2
C. 3 -> 2 -> 1 -> 4
Which of the following happens PRIOR to prophase of mitosis?
- DNA replication
- coiling of DNA into chromosomes
- nuclear envelope disappears
a. 1 only
b. 2 and 3
c. 1 and 3
d. 1, 2, and 3
A. 1 only
//
2 - wrong since prophase starts with uncoiled DNA
3 - wrong since that’s during prometaphase
Most cells in the human body undergo the process of mitosis. Some specialized human cells undergo the process of meiosis. Which of these statements ACCURATELY describes a difference between these two processes in humans?
a. Mutations do not occur during mitosis but they do occur during meiosis.
b. Mitosis results in half as many chromosomes as meiosis produces in each cell.
c. Meiosis creates new body cells and mitosis results in the formation of sex cells
d. Mitosis does not usually produce variation between daughter cells but meiosis does
D. Mitosis does not usually produce variation between daughter cells but meiosis does
At which stage of meiosis does a pair of sister chromatids separate?
a. Metaphase I
b. Anaphase I
c. Metaphase II
d. Anaphase II
D. Anaphase II
Which stage/s of cell division is unique to meiosis?
a. Metaphase
b. Metaphase I
c. Metaphase and Metaphase I
d. Meiosis has no unique stages.
B. Metaphase I
What is a difference between a cell in the G1 phase and a cell in the G2 phase of the cell cycle?
a. A cell in the G2 phase would be smaller than a cell in the G1 phase
b. A cell in the G2 phase would have more mitochondria than a cell in the G1 phase
c. A cell in the G1 phase would have more DNA in its chromosomes than a cell in the G2 phase
d. DNA replication occurs in the G1 phase but not in the G2 phase
B. A cell in the G2 phase would have more mitochondria than a cell in the G1 phase
- Mitosis: Egg, Sperm; Meiosis; Embryo Growth
- Mitosis: Egg, Embryo Growth; Meiosis: Sperm
- Mitosis: Sperm; Meiosis: Egg, Embryo Growth
- Mitosis: Embryo Growth; Meiosis: Egg, Sperm
Which of the following is true?
a. 1
b. 2
c. 3
d. 4
D. 4
If there are 16 chromosomes in a cell that is about to divide, what will be the number of chromosomes in a daughter cell after division by mitosis or meiosis?
(Mitosis, Meiosis)
a. 16, 16
b. 16, 8
c. 8, 16
d. 8, 8
B. 16, 8
// Meiosis produces half the number of chromosomes as the parent cell
