What is not true for genetic code?
- A codon in mRNA is read in a non-contiguous fashion
- It is nearly universal
- It is degenerate
- It is non-ambiguous
The Correct Option is A
Solution and Explanation
(i) The genetic code is written in linear form, using the ribonucleotide bases that compose mRNA molecule as letters.
(ii) Each word of codon consists of three letters, i.e., the codon is triplet.
(iii) The genetic code inside the cell medium is said to be non-ambiguous.
(iv) The code is degenerate, i.e., a given amino acid can be specified by more than one codons.
(v) The codon contains start and stop signals.
(vi) The code is said to be commaless (continuous).
(vii) The code is non-overlapping.
Top Questions on Human genome project
- Select the observations drawn from the human genome project which are correct.
(A) The human genome contains 3164.7 million bp.
(B) The average gene consists of 3000 bases.
(C) Total number of genes is estimated at 30,000.
(D) The functions are unknown for over 50% of discovered genes.
(E) Less than 2% of the genome codes for proteins.- CUET (UG) - 2024
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Expressed Sequence Tags (ESTs) refers to
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Questions Asked in MU OET exam
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Concepts Used:
Human Genome Project
The Human Genome Project was an international research effort designed to map out the DNA sequence of an entire human genome. It was the first undertaking of its kind and took over a decade to complete. The goal of the Human Genome project was to sequence and identify the entire Human genome. And then store the entire genome information in a database. The Human Genome Project required improvement tools for data analysis.
The Human Genome Project (HGP) was an international, collaborative research program whose goal was the complete mapping and understanding of all the genes of human beings. All our genes together are known as our "genome."
Goals of the Human Genome Project
The HGP set out to establish the following goals:
- First, to identify all the approximately 20,000-25,000 genes that make up the human DNA.
- Map out the genome sequences of the 3 billion chemical base pairs that comprise the human DNA.
- Ensure the storage of the derived information in genome sequence databases.
- Optimize the tools required for the data analysis process.
- Handle the ethical, legal, and social issues (ELSI) that may arise during the project.
The shotgun phase of the Human Genome Project itself consisted of three steps:
- Obtaining a DNA clone to sequence
- Sequencing the DNA clone
- Assembling sequence data from multiple clones to determine overlap and establish a contiguous sequence
Impact of Human Genome Research
The Human Genome Project will entirely reshape the approach to all biomedical research as well as therapeutic and preventive health care. The development in fields like bioinformatics and biostatistics will allow for better pattern detection and analysis of genetic disorders.
Students interested in a deeper analysis of the Human Genome Project can visit the official website created by the National Institute of Health.