THE MOLECULAR BASIS OF INHERITANCE
THE HUMAN GENOME
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Chromosome X
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Chromosome Y
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Autosome 13
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Chromosome 1
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Detailed explanation-1: -Chromosome Y contains the least number of genes. i.e. 231.
Detailed explanation-2: -Compared to the other human chromosomes, the Y chromosome has a limited number of genes.
Detailed explanation-3: -The Y chromosome is one-third the size of the X chromosome and contains about 55 genes while the X chromosome has about 900 genes. In genealogy, the male lineage is often traced using the Y chromosome because it is only passed down from the father.
Detailed explanation-4: -Solution : Since Y chromosome possesses small amount of euchromatin that contains DNA or genes, therefore it is genetically less active.
Detailed explanation-5: -The Y chromosome likely contains 70 to 200 genes that provide instructions for making proteins. Because only males have the Y chromosome, the genes on this chromosome tend to be involved in male sex determination and development.