Question: What is meant by chromosomes and its types?

Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.

What are chromosomes and its types?

Human chromosomes

Chromosomes in humans can be divided into two types: autosomes (body chromosome(s)) and allosome (sex chromosome(s)). Certain genetic traits are linked to a person’s sex and are passed on through the sex chromosomes. The autosomes contain the rest of the genetic hereditary information.

What is meant by chromosome explain its two types?

(1) Metacentric chromosomes: In these chromosomes, the centromere is present in the middle, which gives rise to two equal arms. (2) Sub-metacentric chromosomes: In sub-metacentric chromosomes, the centromere lies slightly away from the middle region. As a result, it has one arm slightly longer than the other.

What is meant by chromosome explain its types with diagram?

Chromosomes are thread-like structures found in the nucleus of all living cells. Chromosomes are divided into four types based on the position of the centromere. … (4) Telocentric chromosomes: In telocentric chromosomes, the centromere is present at the terminal end. As a result, the chromosome has only one arm.

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What is chromosome Class 9?

Chromosomes are the genetic material present in all cells. They are present in the nucleus of a eukaryotic cell. They are a thread-like structure. Each chromosome of a eukaryotic cell contains DNA and associated proteins, known as histone proteins.

What are chromosomes in simple words?

(KROH-muh-some) A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.

What are the different types of chromosomes Class 11?

Chromosomes are divided into four types based on the position of the centromere.

  • (i) Metacentric chromosome.
  • (ii) Sub-metacentric chromosome.
  • (iii) Acrocentric chromosome.
  • (iv) Telocentric chromosome.

What is 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 the best definition of a chromosome?

[ (kroh-muh-sohmz) ] The small bodies in the nucleus of a cell that carry the chemical “instructions” for reproduction of the cell. They consist of strands of DNA wrapped in a double helix around a core of proteins. Each species of plant or animal has a characteristic number of chromosomes.

What is a chromosome Class 12?

Additional information: 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. DNA is coiled around proteins called histones, which give its structure support.

What is a chromosome Class 10?

Hint: Chromosomes are thread-like structures which are located inside the nucleus of the cell and each of these chromosomes are made up of proteins and deoxyribonucleic acid (DNA) which is passed on from one generation to another.

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What are in Chromosomes?

Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.