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It's in the Genes... Trivia Quiz

This is not for the faint of heart. It's meant to be difficult, so you now have advance warning. :)

A multiple-choice quiz by ixion. Estimated time: 6 mins.

Author
ixion

Time
6 mins

Type
Multiple Choice

Quiz #
5,576

Updated
Dec 03 21

# Qns
20

Difficulty
Difficult

Avg Score
10 / 20

Plays
3423

One at a Time - Single Page - Timed Game

Question 1 of 20

1. Adenine is a kind of what? Hint

base

protein

amino acid

codon

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Question 2 of 20

2. How many types of bases are there? Hint

three

five

four

six

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Question 3 of 20

3. Which of the following is NOT a nucleic acid? Hint

DNA

tRNA

mRNA

TCA

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Question 4 of 20

4. What does the 'm' in mRNA stand for?

Answer: (One Word)

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Question 5 of 20

5. Linus Pauling worked on discovering the true structure of DNA. What did he theorize about its structure? Hint

DNA is a double helix

DNA is a triple helix

RNA is single-stranded

RNA is double-stranded

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Question 6 of 20

6. What is considered the native form of DNA? Hint

A-DNA

Z-DNA

C-DNA

B-DNA

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Question 7 of 20

7. Which of the following is not a valid nucleic pairing? Hint

A=T

A=C

A=U

C=G

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Question 8 of 20

8. Whose rules dictate that there are an equal numbers of adenine and thymine residues and equal numbers of guanine and cytosine residues in DNA? Hint

Watson's

Pauling's

Chargaff's

Franklin's

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Question 9 of 20

9. In what year did James Watson and Francis Crick determine that the structure of DNA was a double helix? Hint

1949

1953

1961

1957

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Question 10 of 20

10. Which of the following is not a pyrimidine? Hint

guanine

thymine

cytosine

uracil

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Question 11 of 20

11. In what direction does DNA replication run smoothly? Hint

5' to 3'

3' to 3'

3' to 5'

5' to 5'

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Question 12 of 20

12. How many bases make up a codon? Hint

two

three

four

five

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Question 13 of 20

13. What does a codon code for? Hint

enzymes

proteins

amino acids

nucleic acids

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Question 14 of 20

14. Three codons are known as nonsense codons because they do not code for a specific amino acid. Which of the following is not a name of a nonsense codon? Hint

opal

amber

onyx

ochre

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Question 15 of 20

15. You have two heterozygous peas for the green color (the recessive trait is yellow). What percentage of the progeny will be yellow? Hint

zero percent

50 percent

25 percent

75 percent

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Question 16 of 20

16. What term refers to the physical appearance of a genetic trait? Hint

homozygote

genotype

phenotype

heterozygote

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Question 17 of 20

17. What causes the formation of Okazaki fragments? Hint

replication in the 3' to 5' direction

viral infection

nuclear radiation

cellular division

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Question 18 of 20

18. Who is considered the Father of Modern Genetics (Last name only)?

Answer: (One Word)

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Question 19 of 20

19. What part of DNA corresponds to 'useless' coding? Hint

exons

introns

codons

histones

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Question 20 of 20

20. Which of the following is a point mutation? Hint

insertion

all are point mutations

deletion

transition

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Quiz Answer Key and Fun Facts

1. Adenine is a kind of what?

Answer: base

2. How many types of bases are there?

Answer: five

adenine, guanine, cytosine, thymine and uracil

3. Which of the following is NOT a nucleic acid?

Answer: TCA

4. What does the 'm' in mRNA stand for?

Answer: messenger

5. Linus Pauling worked on discovering the true structure of DNA. What did he theorize about its structure?

Answer: DNA is a triple helix

Yes, he was mistaken.

6. What is considered the native form of DNA?

Answer: B-DNA

While both A- and B-DNA are right-handed helices, B-DNA was chosen to represent the native form of DNA by virtue of its X-ray pattern resembling that of DNA in intact sperm heads. Z-DNA is a left-handed helix.

7. Which of the following is not a valid nucleic pairing?

Answer: A=C

8. Whose rules dictate that there are an equal numbers of adenine and thymine residues and equal numbers of guanine and cytosine residues in DNA?

Answer: Chargaff's

Erwin Chargaff never fully understood the significance of this revelation when he discovered them in the late 1940s.

9. In what year did James Watson and Francis Crick determine that the structure of DNA was a double helix?

Answer: 1953

10. Which of the following is not a pyrimidine?

Answer: guanine

Adenine and guanine are purines, which are larger than pyrimidines.

11. In what direction does DNA replication run smoothly?

Answer: 5' to 3'

12. How many bases make up a codon?

Answer: three

13. What does a codon code for?

Answer: amino acids

There are 20 amino acids encoded by sixty-one codons.

14. Three codons are known as nonsense codons because they do not code for a specific amino acid. Which of the following is not a name of a nonsense codon?

Answer: onyx

The names came about as the result of a laboratory joke: The German word for amber is Bernstein, who was one of the researchers who helped discover amber {mutations;} ochre and opal were obvious puns.

15. You have two heterozygous peas for the green color (the recessive trait is yellow). What percentage of the progeny will be yellow?

Answer: 25 percent

16. What term refers to the physical appearance of a genetic trait?

Answer: phenotype

17. What causes the formation of Okazaki fragments?

Answer: replication in the 3' to 5' direction

18. Who is considered the Father of Modern Genetics (Last name only)?

Answer: Mendel

Gregor Mendel was an Austrian monk whose work with peas were a nearly a century ahead of his time.

19. What part of DNA corresponds to 'useless' coding?

Answer: introns

The exons that code for proteins are often separated from one another by large introns as the complexity of the organism increases.

20. Which of the following is a point mutation?

Answer: transition

Transitions and transversions are point mutations based on the fact that one base pair replaces another. Insertion and deletion mutations occur when pairs are inserted or deleted from DNA.

Source: Author ixion

This quiz was reviewed by FunTrivia editor WesleyCrusher before going online.
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