Genetic Code Answers

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

A
creation of an accurate model of DNA structure
B
creation of an X-ray diffraction image of DNA structure
C
identification of a pattern in ratios of DNA bases
D
identification of DNA in bandages that contained pus
2
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Which is one of the primary goals of the Human Genome Project?

A
to cure all diseases that affect humans
B
to sequence the genome of every living individual
C
to identify the 20,000 to 25,000 genes that comprise the human genome
D
to measure the length of human DNA
3

In which structure is all the genetic information of an organism found?

A
DNA
B
gene
C
codon
D
protein
4

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

A
The order of the codons differs between organisms.
B
The order of the codons is the same between organisms.
C
The codons in each organism are the same.
D
The codons in each organism differ.
5

Which are segments of DNA that code for specific traits?

A
genes
B
chromosomes
C
proteins
D
codons
6

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

A
A = T; C = G
B
A = C; T = G
C
A = G; T = U
D
A = U; C = G
7

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

Question illustration
A
James Watson and Francis Crick
B
Marshall Nirenberg and Heinrich Matthaei
C
Rosalind Franklin
D
Erwin Chargaff
8

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

A
nucleotide
B
gene
C
phosphate molecule
D
deoxyribose sugar
9

Who first identified DNA?

A
Rosalind Franklin
B
Erwin Chargaff
C
Friedrich Miescher
D
James Watson
10

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

A
discovery of codons
B
discovery and extraction of DNA
C
creation of a model of DNA
D
creation of Photo 51

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Genetic Code Answers — Biology VIA Fall 2026…