Genetic Code

Question 1

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 2

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

Revolt · Accepted Answer

guanine

Question 3

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

Revolt · Accepted Answer

discovery of codons

Question 4

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

Revolt · Accepted Answer

James Watson and Francis Crick

Question 5

What is one benefit of mapping the human genome?

Revolt · Accepted Answer

locating the chromosomal abnormalities that cause disease

Question 6

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?

Revolt · Accepted Answer

genes

Question 7

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

Revolt · Accepted Answer

gene

Question 8

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

Revolt · Accepted Answer

A = T; C = G

Question 9

Who first identified DNA?

Revolt · Accepted Answer

Friedrich Miescher

Question 10

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

Genetic Code Answers

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