Genetic Code Answers

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

A
Rosalind Franklin
B
Friedrich Miescher
C
James Watson and Francis Crick
D
Marshall Nirenberg and Heinrich Matthaei
2
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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
3

Which of the following incorrectly matches the term with its location?

A
DNA is found in a chromosome.
B
Chromosomes are found in the nucleus of a cell.
C
Genes are located in a nucleotide.
D
Nitrogen bases are located in the central rungs of a DNA ladder.
4

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
5

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
6

Which bases are found in a strand of DNA?

A
thymine, guanine, cytosine, uracil
B
guanine, cytosine, uracil, adenine
C
cytosine, glycine, adenine, thymine
D
adenine, thymine, guanine, cytosine
7

Organisms inherit specific traits and characteristics from their parents. Albinism is an inherited disorder that occurs when an organism is unable to produce or distribute melanin. Melanin is a substance in the body that helps determine skin color, hair color, and eye color.Which is the basic unit of heredity that carries the trait of albinism from parent to offspring?

Question illustration
A
base pairs
B
genes
C
proteins
D
codons
8

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
9

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
10

Which are segments of DNA that code for specific traits?

A
genes
B
chromosomes
C
proteins
D
codons

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