Zoology - Molecular Basis of Inheritance Question with Solution | TestHub
How many of the following statements are true in the context of the salient features human genome project?
I. There aremillion SNPs.
II. 99.9% genome is similar in all humans.
III. 32% of genome codes for proteins.
IV. The largest human gene is dystrophin with 2.4 million base pairs.
V. The human genome has a maximum number of genes onchromosome i.e., 3968.
Options:
Answer:
Solution:
Some characteristics of the Human Genome:
- There are 3164.7 million nucleotide bases in Human genome
- The number of genes in Human genome is about 30,000.
- Average gene consists of 3000 bases, but sizes vary. The largest gene in human is dystrophin found on X-chromosome that has 2.4 million bases. Although, average gene in human has 3000 bases but varies in size.
- Out of all the nucleotide bases 99.9% are identical and only 0.1% is different which makes each of us unique.
- Functions of over 50 of discovered genes are unknown.
- Most genes are found in Chromosome I ~2968 and Y has the fewest 231.
- Less than 2% of the genome codes for proteins.
- Repeated sequences make up very large portion of human genome.
- Approximately 1.4 million SNPs (SNPs- Single nucleotide polymorphism or 'snips') are found in human genome.
