Answer:
double helix
Explanation:
The double helix is a description of the molecular shape of a double-stranded DNA molecule. In 1953, Francis Crick and James Watson first described the molecular structure of DNA, which they called a "double helix," in the journal Nature.
b. to grow the population of their species.
Answer: dust, gas, dark matter,round
Chromosomal changes occur, Induced mutations occur, and Viable errors in DNA
Explanation: I just took it :)