Question
Download Solution PDFHow many pairs of chromosomes are present in human beings?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 23.
Key Points
- Chromosomes reside inside the nucleus of cells.
- These are threadlike structures made of protein and a single molecule of DNA.
- It serves the purpose to carry the genomic information from cell to cell.
- A chromosome is a long DNA molecule with part or all of the genetic material of an organism.
- Most eukaryotic chromosomes include packaging proteins called histones which are aided by chaperone proteins.
- Together they bind and condense the DNA molecule to maintain its integrity.
Additional Information
- In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.
- 22 of these pairs are known as autosomes having identical looks in both males and females.
- 23rd pair, the sex chromosomes, differ between males and females.
- Females have two copies of the X chromosome while males have one X and one Y chromosome.
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