What is chromosomes in simple words?
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
What is chromosome in biology?
A chromosome is a structure within the cell that bears the genetic material as a threadlike linear strand of DNA bonded to various proteins in the nucleus of eukaryotic cells, or as a circular strand of DNA (or RNA in some viruses) in the cytoplasm of prokaryotes and in the mitochondrion and chloroplast of certain …
What is a chromosome Class 12?
Chromosomes are thread-like structures within which DNA is tightly packaged in the nucleus. It can also be defined as a DNA molecule with part or all of the genetic material of an organism.
How do you describe a chromosome?
Chromosomes are thread-like structures in which DNA is tightly packaged within the nucleus. DNA is coiled around proteins called histones, which provide the structural support. Chromosomes help ensure that DNA is replicated and distributed appropriately during cell division.
What is another word for chromosome?
- genetic code.
- nucleic acid.
What is a chromosome Class 11?
A chromosome is a DNA molecule that consists of a part or all of the genetic material of an organism. The chromosome is present in the nucleus of each cell, and it is packaged into thread-like structures.
What is an example of a chromosome?
The definition of a chromosome is a thread-like structure of DNA (nucleic acids and proteins) that carries genes. The “X” or “Y” gene that determines whether you will be a boy or a girl is an example of a chromosome.
What does a chromosome really look like?
They are so small and thin, we can’t see them even with a powerful microscope. However, when a cell gets ready to divide, the chromosomes wind themselves up and become tightly packed. With a high powered microscope, scientists can see chromosomes. They are usually in pairs and look like short little worms .
What does the chromosome do for the cell?
Chromosomes are essential for the process of cell division and are responsible for the replication, division, and creation of daughter cells that contain correct sequences of DNA and proteins.
Which chromosome carries the fewest genes?
The (X / Y) chromosome carries the fewest number of genes.
What is the normal number of chromosomes?
Human cells normally contain 23 pairs of chromosomes, for a total of 46 chromosomes in each cell. A change in the number of chromosomes can cause problems with growth, development, and function of the body’s systems.