Class 12th Biology 2016 Set1 Outside Delhi Board Paper Solution
(a) What do ‘Y and ‘B’ stand for in YAC’ and ‘BAC’ used in Human Genome Project (HGP). Mention their role in the project.
(b) Write the percentage of the total human genome that codes for proteins and the percentage of discovered genes whose functions are known as obs erved during HGP.
(c) Expand ‘SNPs’ identified by scientists in HGP.
(a) The BAC (Bacterial Artificial Chromosomes) and the YAC (Yeast Artificial Chromosomes) represent the host cells used for cloning of DNA fragments using specialised vectors.
(b) Less the 2% of the human genome codes for proteins. Less than 50% of the discovered genes have their functions known.
(c) SNP: Single Nucleotide Polymorphism. These are sites for single DNA base differences. SNPs hold promise for location of disease-associated sequences on chromosomes and tracing human history.
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