Solution-During which stage of meiosis does crossing-over | Homework Help

1. Which of the following is NOT a function of meiosis?

A) Gamete formation
B) Maintenance of correct chromosome number following fertilization
C) Tissue renewal and repair
D) Generation of genetic diversity by crossing over
E) Generation of genetic diversity by random assortment of chromosomes

2. During which stage of meiosis does crossing-over occur?

A) Prophase I
B) Anaphase I
C) Telophase I
D) Prophase II
E) Anaphase II

3. The DNA content of a diploid cell in the G1 phase of the cell cycle is x. The DNA content of a single cell at metaphase of meiosis II would be________.

A) 2x
B) x
C) 4x
D) 0.5x
E) 0.25x

4. Interkinesis is different from interphase in which way?

A) Interkinesis occurs after a cell finishes a nuclear division.
B) Interkinesis is the stage that precedes a prophase stage.
C) Interphase involves DNA replication and interkinesis does not.
D) Interkinesis can be variable in length

5. Which occurs in anaphase of mitosis?

A) Centrioles move to opposite poles.
B) Chromosomes line up along the equator of the dividing cell.
C) Chromosomes move to opposite poles.
D) The nuclear envelope disappears.
E) The nuclear envelope is constructed.

6. Which is NOT true about daughter cells of mitosis and meiosis?

A) In meiosis, daughter cells are haploid.
B) In meiosis, there are four daughter cells.
C) In mitosis, there are two daughter cells.
D) In mitosis, the daughter cells are genetically identical.
E) In meiosis, the daughter cells are genetically identical.

7. Which occurs in metaphase of mitosis?

A) Centrioles move to opposite poles.
B) Chromosomes line up along the equator of the dividing cell.
C) Chromosomes move to opposite poles.
D) The nuclear envelope disappears.
E) The nuclear envelope is constructed.

8. Which of the following is a protein synthesized at specific times during the cell cycle that associates with a kinase to form a catalytically active complex?

A) cyclin
B) PDGF
C) cdk
D) protein kinase
E) actin protein

9. Most specialized cells of a multicellular organism _______________.

A) develop through mutation from less specialized cells of the organism
B) contain more genetic material than less specialized cells of the same organism.
C) contain less genetic material than less specialized cells of the same organism.
D) have the same amount of DNA and the same number of chromosomes as most of the other cells of the organism.

10. Cytokinesis usually, but not always, follows mitosis. If a cell completed mitosis but not cytokinesis, the result would be a cell with ___________.

A) high concentrations of actin and myosin
B) two nuclei
C) a single large nucleus
D) two nuclei with half the amount of DNA
E) two abnormally small nuclei