5 Questions
Who proposed the model of a double helix structure for DNA in 1953 and why was it a major breakthrough in science?
James Watson and Francis Crick proposed the model of a double helix structure for DNA in 1953. It was a major breakthrough in science as it became the most famous and intensely studied molecule, providing insights into the genetic material and its functions.
What is the function of genes and how are they organized in chromosomes?
Genes have two main functions: transmission of genetic information and expression of genetic information. Genes are organized into chromosomes, which contain DNA associated with proteins.
How is a gene defined and what is its role in heredity?
A gene is a sequence of DNA that codes for a gene product, usually a protein or RNA. Its role in heredity is to serve as the basic unit of heredity, passing genetic information to the next generation of offspring cells.
What is the recent discovery about the coding capacity of a gene and what are the potential products of a gene?
It has been shown that a gene can code for several proteins or RNA as a product. This expands the traditional understanding of genes coding for a single product.
Explain the importance of genes in nature, considering their roles in cell division and heredity.
Genes are important in nature as they carry the genetic information passed to the next generation of offspring cells following division of the parental cell. They are also the basic units of heredity, controlling the activities of a cell and playing a crucial role in transmitting genetic information.
Test your knowledge on DNA, genes, and cell division, including the discovery of the DNA structure by James Watson and Francis Crick. Explore how DNA, genes, and chromosomes control the activities of a cell, and the association of DNA with proteins in the nucleus.
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