The modern concept of gene is
A segment of $DNA$ capable of crossing over
A functional unit of $DNA$
A segment of $DNA$
A segment of chromosome
What background information did Watson and Crick have made available for developing a model of $DNA$ ? What was their contribution ?
A single stranded $DNA $ molecule is the genetic material of bacteriophage
The central dogma of protein synthesis is
Watson and Crick are known for their discovery that $DNA$
The length of a helix of $DNA$ is