Question
Download Solution PDFHow many pairs of autosomes does a normal human have?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 22.
Key Points
- No. of Chromosome in Humans
- The nucleus of every cell contains microscopic, thread-like components that make up a chromosome.
- Each chromosome is made up structurally of DNA that is tightly wound around distinct proteins known as histones.
- There are 46 chromosomes in all, divided into 23 pairs in humans.
- These 22 pairs—which are the same for both males and females—are referred to as the autosomes.
- There are differences between the sexes in the 23rd pair of chromosomes, or "allosomes," which is the sex chromosome.
- When compared to females, who have two copies of the "X" chromosome (44A + XX), males only have one "X" and one "Y" chromosome (44A+ XY).
Additional Information
- Except for sex determination, autosomes are primarily linked to the numerous metabolic processes that occur within the cell.
- It occurs half in no. in sex cells (gametes) and in pairs in somatic cells.
- In humans, each parent gives one of their sex chromosomes to the child, dividing the child's chromosomes equally between the mother and the father.
- DNA is stored in a cell's chromosomes, which also have components needed for segregation and replication.
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