Genetic Code

Question 1

What was Marshall Nirenberg and Heinrich Matthaei’s contribution to our current understanding of the genetic code?

Revolt · Accepted Answer

discovery of codons

Question 2

Rosalind Franklin is famous for which contribution to the study of DNA?

Revolt · Accepted Answer

creation of an X-ray diffraction image of DNA structure

Question 3

Who is credited with creating the first accurate model of DNA?

Revolt · Accepted Answer

James Watson and Francis Crick

Question 4

According to Chargaff's rule, base pairing in DNA should resemble which of the following?

Revolt · Accepted Answer

A = T; C = G

Question 5

What is one benefit of mapping the human genome?

Revolt · Accepted Answer

locating the chromosomal abnormalities that cause disease

Question 6

As DNA is replicated, which DNA base pair will bond to cytosine?

Revolt · Accepted Answer

guanine

Question 7

If the same base pairs are used to code for all organisms, why is there so much variation among organisms?

Revolt · Accepted Answer

The order of the codons differs between organisms.

Question 8

What basic unit of heredity is found on segments of DNA and are passed on from parent to offspring?

Revolt · Accepted Answer

gene

Question 9

Which bases are found in a strand of DNA?

Revolt · Accepted Answer

adenine, thymine, guanine, cytosine

Question 10

In 1953, who developed the model that is shown below?

Revolt · Accepted Answer

James Watson and Francis Crick

Genetic Code Answers