How did watson and crick's discovery, shown above, advance knowledge of human life? (its a pic of a dna strand ) it allowed doctors to observe the brain in action. it explain why people have certain characteristics. it introduced new techniques in organ transplants. it vaccinate against polio and other diseases.

The correct answer is B) It helps explain why people have certain characteristics.

Watson and Creek’s discovery advanced knowledge of human life because It helps explain why people have certain characteristics.

In 1958, Francis Crick and James Watson discovered the doublé hélix or the twisted ladder structure of the DNA. This is the structure of deoxyribonucleic acid. This allowed scientist of the time to understand better how genes control chemical processes in the cells of a human body. Watson and Creek’s discovery advanced knowledge of human life because It helps explain why people have certain characteristics.  

president franklin roosevelt supported the tva as part of his first new deal measures approved by congress in 1933. this new agency was designed to control floods, produce electric power, and improve the lives of people living in the tennessee valley. the tva accomplished many of these goals despite problems.