The term 'gene' refers to [NCERT 1976]
A) Sequence of amino acids in protein
B) A linkage group
C) A part of RNA
D) A portion of DNA
Answers
A Gene is a portion or a region of the Long DNA strand in
a chromosome.
A gene is the main part of a DNA which is responsible for hereditary transmission of traits in all living organisms. It encodes functions of proteins. One gene can be said to be one unit of heredity. A Gene is one region or part of a DNA. It contains strands.
A gene affects a particular trait or characteristic in an organism. Gene contains one open reading frame that is transcribed, and also promoters and enhancers controlling that transcription. Many DNA strands are contained in a chromosome. They are in the cell nucleus. The variants of genes due to mutations result in alleles.
During transcription the DNA is first copied into a single stranded messenger RNA and then from it the final protein is produced.
The sequence of amino acids in a protein is referring to the encoding or decoding of the gene and the function of the protein.