Select the correct set from the following statements with respect to the salient features of the human genome.
i. The human genome contains 3164.7 billion nucleotides.
ii. The function is unknown for over 50 % of the discovered gene.
iii. Less than 20% of the genome code for Proteins.
iv chromosomes -1 has the most genes ( 2968 ) and y has the fewest ( 231 ) .
V. The total number of genes estimated is 30,000.

Options

A. ii , iv , v
B. i,ii,iv
C. i,iii,v
D. i,iv,v

Answer

To solve the question regarding the salient features of the human genome, we will analyze each statement one by one to determine its correctness.

### Step-by-Step Solution:

1. **Statement i**: "The human genome contains 3164.7 billion nucleotides."
- This statement is incorrect. The human genome actually contains approximately 3.164 billion base pairs (nucleotides), not billion but million. Therefore, this statement is false.

2. **Statement ii**: "The function is unknown for over 50% of the discovered genes."
- This statement is correct. It is estimated that for more than 50% of the genes identified in the human genome, the functions remain unknown. Thus, this statement is true.

3. **Statement iii**: "Less than 20% of the genome code for proteins."
- This statement is incorrect. In humans, only about 1-2% of the genome actually codes for proteins. Therefore, stating "less than 20%" is misleading as it implies a higher percentage than is accurate. Thus, this statement is false.

4. **Statement iv**: "Chromosome 1 has the most genes (2968) and Y has the fewest (231)."
- This statement is correct. Chromosome 1 does indeed have the most genes, estimated at around 2968, while chromosome Y has the fewest genes, approximately 231. Therefore, this statement is true.

5. **Statement v**: "The total number of genes estimated is 30,000."
- This statement is correct. The estimated number of genes in the human genome is around 30,000. Thus, this statement is true.

### Conclusion:
From the analysis:
- The correct statements are: ii, iv, and v.
- Therefore, the correct set of statements with respect to the salient features of the human genome is **ii, iv, and v**.