Question 1 :
V, J and L shaped chromosome occur in which of the following?<br/>
Question 2 :
The presence of checkpoint during mitosis ensures the attachment of all chromosomal kinetochore proteins to the spindle fibres. The absence of attachment of kinetochore proteins produces a signal preventing mitosis to proceed to next stage. The occurrence of this check point is responsible for transition from<br/>
Question 3 :
How many types of fibers are there in the nuclear spindle?<br/>
Question 4 :
At anaphase of meiosis, some chromosomes lag behind. They are called laggards. This is due to<br/>
Question 5 :
Position of the same arm of chromosomes during metaphase of mitosis are
Question 6 :
Beads on string of A are seen in B which condense to form chromosomes in C stage of cell division.
Question 8 :
There are 42 chromosomes in a cell. After a particular phase of mitosis, the number of chromosomes remain same. Name the phase.<br/>I. Anaphase<br/>II. Metaphase<br/>III. Prophase<br/>IV. Telophase
Question 12 :
Which of the following is the most primitive type of mitosis?
Question 14 :
At metaphase, chromosomes are attached to the spindle fibres by their
Question 15 :
Skeletal muscle performs many functions in the body, including locomotion, support, and heat generation. Unlike most cells in the human body, skeletal muscle cells are multinucleate (having more than one nucleus per cell).<br/><span>Which statement describes a circumstance that would produce a mature cell that has more than one nucleus?</span>
Question 18 :
Which phase of mitosis is responsible for uncoiling of chromosomes followed by nuclear membrane formation?<br/>
Question 21 :
Nuclear membrane is formed around the groups of daughter chromosomes during the telophase by
Question 23 :
Which stage of cell division provided visual evidence of mendel's law of independent assortement?
Question 24 :
Best stage to observe shape, size and number of chromosomes is <span><br></span>
Question 26 :
Which one of the following precedes re-formation of the nuclear envelope during M-phase of the cell cycle?
Question 27 :
Segregation of genes takes place during which phase of the meiosis?
Question 28 :
The centromere does not divide till the end of metaphase. This is important because centromere <span><br></span>
Question 29 :
Identify the correct combination regarding anaphase, anaphase I and anaphase II.
Question 31 :
<span>The formation of multinucleated cell, with identical genetic information takes place b</span><span>y going through</span><br/>
Question 32 :
Which is not characteristic of telophase <br/>1. Chromatin condenses to form chromosomes. <br/>2. Nucleolus, Golgi complex and ER reform. <br/>3. Nuclear envelopes assemble around chromosome clusters. <br/>4. Centromeres split, and chromatids separate.<br/>5. Chromosome clusters and their identity is lost.
Question 33 :
In anaphase, a metacentric chromosome appears in which of the following?<br/>
Question 34 :
The number of bivalents is 8 in prophase I. What is the number of chromosomes during anaphase II?
Question 35 :
The structures that line up the chromosomes on the equatorial plate during metaphase are called?
Question 36 :
At which of the given stages of mitosis, chromosomes appear in V, L, J and I shapes.
Question 39 :
<span>The movement of chromosomes to the opposite poles during cell division takes place</span><br/>
Question 40 :
Cytochalasin B is a drug isolated from moulds. It blocks the formation of contractile microfilaments. Which of the following aspects of the cell cycle would be most disrupted due to this ?
Question 42 :
There is continuous multiplication in cell nuclei and all nuclei have same genetic information. The cell is undergoing
Question 43 :
What will happen if you are provided with root-tips of onion in your class and are asked to count the chromosomes, which of the following stage can be observed easily?
Question 45 :
What are spindle fibers that connect the centromere to respective poles called?
Question 47 :
Which one of the following represents the best stage to view the shape, size and number of chromosomes?
Question 50 :
In which stage, the centromere lie at equator and arms are directed towards poles?
