Which best describes the relationship between DNA, genes and chromosomes
- DNA is segments of genes which form tight coils called chromosomes.
- Genes are segments of DNA which form tight coils called chromosomes.
- Chromosomes are segments of DNA which form tight coils called genes.
- Genes are segments of chromosomes which form tight coils called DNA.
Answer: B. Genes are segments of DNA which form tight coils called chromosomes.
Answer Explanation
Genes are specific segments or sequences of DNA that carry instructions for building and maintaining proteins, essential for the structure and function of cells. Chromosomes are structures made up of tightly coiled DNA molecules. Each chromosome contains a number of genes, and the genes are arranged linearly along the DNA molecule of each chromosome.
A cell divides when its chromosomes condense into tightly coiled structures so that genetic material is distributed accurately to its daughter cells when it divides. Chromosomes are a condensed, coiled structure. Genes are segments of DNA that coil together to form chromosomes, representing a correct relationship between these components.
Why the other options are not correct:
A. DNA is segments of genes that form tight coils called chromosomes.
This option misrepresents the relationship between DNA, genes, and chromosomes. DNA is the molecule that contains genetic instructions, not a segment of genes. It was already mentioned earlier that genes are DNA sequences that are specific sequences in nature. A chromosome is not formed by coiling DNA; rather, it is the chromosomes which are made up of coiled DNA.
C. Chromosomes are segments of DNA which form tight coils called genes.
Chromosomes are segments of DNA that form tight coils called genes, which is incorrectly stated. In reality, chromosomes are made up of DNA, not the other way around. Genes, however, are not tight coils of DNA; genes are rather specific sequences of DNA that may be found on chromosomes.
D. Genes are segments of chromosomes that form tight coils called DNA.
Option D confuses the relationships between DNA, genes, and chromosomes. Genes are not segments of chromosomes; rather, they are found on chromosomes. In addition, DNA is not formed by tight coils called chromosome; it is the fundamental molecule that forms genes and chromosomes as well as serving as the genetic material.
Conclusion
DNA, genes, and chromosomes are related in the sense that genes are DNA segments that form tight coils known as chromosomes. A gene is a specific sequence of DNA responsible for encoding proteins and other molecules, and DNA is the fundamental molecule carrying genetic information. In contrast, chromosomes contain many genes in tightly coiled DNA.
The understanding of these relationships is crucial for understanding genetics and inheritance, since they are responsible for the diversity of life and the transmission of traits from generation to generation.
Most subcultures do not reject all of the values and practices of the larger society.
I am Bibisha Shiwakoti a final year BBS student from Janapremi College. I have completed my higher secondary education at Kalinchowk Secondary School.
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