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.  

julius caesar turned the roman republic into the roman empire by coming in and taking the "dictator" role during the time of a civil war (elites vs lower classes) winning battles and reputation, then declaring him dictator for life

hope this : )

254.34

step-by-step explanation:

the formula for area of a circle is given by

a = pi * r^2

a = pi * 9^2

a = 81*pi

using 3.14 as an approximation for pi

a = 3.14*81

a = 254.34