Cell Cycle

The structure that holds sister chromatids together is the

The diagram shows replication of chromosomes. What is the total number of chromosomes in this diagram?

Some students of SSC observed a thin cross-section from the root tip of an onion plant under the microscope. They found dividing cells at different stages of their life cycle. One of the students found a cell at late prophase and counted 28 chromosomes in it. The number of chromosomes in daughter cells should be:

The primary function of the cell cycle is

Crossing over results in genetic recombination. It occurs between:

The phase in the cell cycle where the cell prepares for division by producing necessary proteins and organelles is the

What causes the number of chromosomes to reduce to half when a cell divides by meiosis?

The two main stages of the cell cycle are

Substance and energy required for the replication of DNA is accumulated in the cell during:

DNA replication occurs in the

During cell division, spindle fibres attach to a chromosome at:

During mitosis, chromosomes align at the cell’s equator in

A bivalent consists of:

The spindle apparatus of plants differs from that of animals in not having:

The phase in which the cell performs most of its normal functions is the

Chromosomal number of a fruit fly is 8. The gametes of the fruit fly contain:

The longest phase of meiosis is:

In meiosis, crossing over occurs during

Crossing over does not occur in

8. The cell shown in this diagram is passing through:

The phase where chromosomes are separated into two daughter cells during mitosis is

All of the following events take place both in mitosis and meiosis except: