The gene for a-globin is present in all vertebrate species. Over millions of years, the DNA sequence of this gene has changed in the lineage of each species. Consequently, the amino acid sequence of a-globin has also changed in these lineages. Among the 141 amino acid positions in this polypeptide, human a-gobin differs from shark […]
RNA is synthesized using DNA as a template. Is DNA ever synthesized using RNA as a template? Explain. Answer: Yes, DNA ever synthesized using RNA as a template by reverse transcription process. Explanation: RNA is synthesized using DNA as a template is called transcription. Transcription means formation of mRNA from DNA and mRNA carries the […]
Difference Between Translation and Transcription The DNA governs the construction of proteins, particularly the genetic material called genes. DNA is transcribed into messenger RNA (mRNA) and then translated into either non-coding RNA or into a protein, which is then carried out by the ribosome. Difference Between Translation and Transcription are as follows: 1. Formation Transcription […]
Sequence of RNA from DNA template strand The template strand of a gene being transcribed is CTTGCCAGT. What will be the sequence of the RNA made from this template? Answer: GAACGGUCA Explanation: Transcription is the process of production of RNA molecule from DNA sequence of a gene. Out of two DNA strands, one strand acts […]
The gene contains 141 codons. How many nucleotides are present in gene’s coding sequence? How many amino acids are expected to be present in the polypeptide encoded by this gene? Answer: 423 nucleotides and 141 amino acids. Explanation: One amino acid = one codon = three nucleotides. Codon is defined as set of instructions which […]
The sequence of a strand of DNA is ATTGCCGTC. If this strand serves as the template for DNA synthesis, what will be the sequence of newly synthesized strand? Answer: TAACGGCAG Explanation: A newly synthesized strand contains nucleotides that are complementary to those in the template sequence. Bases are present in DNA are adenine (A), thymine […]
A genome is a complete set of genes present in a cell of an organism which are responsible for traits or characteristics of an organism. It contains the information which is required for grow and development of an organism.
Which bases are present in DNA? Which bases are present in RNA? Which sugars are present in each of these nucleic acids? Answer: Bases are present in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G). Bases are present in RNA are adenine (A), uracil (U), cytosine (C), and guanine (G). Sugars present […]
Both Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are called as vehicles of genetic inheritance and found in the nuclei of living cells. They are composed of long strand of nucleotides. Nitrogen base, five-carbon sugar and a phosphate group combine to form nucleotides. The main difference between the nucleotides and nucleosides are in their molecular […]
Both DNA and RNA are composed of nucleotides. What molecules combine to form nucleotides? Both Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are called as vehicles of genetic inheritance and found in the nuclei of living cells. They are composed of long strand of nucleotides. Nitrogen base, five-carbon sugar and a phosphate group combine to […]
