What are chromosomes Toppr?

What are chromosomes What are they made of Class 9?

Chromosomes are thread-like structures woven together. Each chromosome is made of proteins and a single molecule of deoxyribonucleic acid (DNA). Chromosomes have been defined as bundles of tightly coiled DNA located within the nucleus of almost every cell in our body.

What is chromosome and example?

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 are chromosomes and genes Class 8?

Chromosomes are pack of cells which contain genes inside human body. It is located in the chromosome. It is located as packed structure of DNA with proteins inside cells f a person. Genes are composed of nucleic acids like DNA or RNA.

What is homologous chromosome Class 12?

Hint:Homologous chromosomes are pairs of chromosomes that have the same structure including centromere position and staining, and length, and have alleles for the same genes at the same loci on each chromosome.

What is the role of chromosomes in heredity?

Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

What are they composed of chromosomes?

Chromosomes are made up of a DNA-protein complex called chromatin that is organized into subunits called nucleosomes.

What is another word for chromosome?


  • RNA.
  • gene.
  • heredity.
  • genetic code.
  • nucleic acid.

How many chromosome do humans have?

46 In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.

How the number of chromosomes are retained in a species Class 10?

Meiosis is responsible for maintaining chromosome number of a species because it produces gametes with half the number of chromosomes in the parent cells. When these gametes combine to form a zygote, the actual chromosome number of a species is retained.


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