The Genetic Code And Transcription - Essentials of Genetics | Biology+

Course

Genetics

Study Pack

Set 1: Introduction to Genetics

Set 2: Mitosis and Meiosis

Set 3: Mendelian Genetics

Set 4: Modifications of Mendelian Ratios

Set 5: Sex Determination and Sex Chromosomes

Set 6: Chromosome Mutations: Variation in Number and Arrangement

Set 7: Linkage and Chromosome Mapping in Eukaryotes

Set 8: Genetic Analysis and Mapping in Bacteria and Bactierophages

Set 9: DNA Structure and Analysis

Set 10: DNA Replication and Recombination

Set 11: Chromosome Structure and Dna Sequence Organization

Set 12: The Genetic Code and Transcription

Set 13: Translation and Proteins

Set 14: Gene Mutation, Dna Repair, and Transposition

Set 15: Regulation of Gene Expression

Set 16: The Genetics of Cancer

Set 17: Recombinant Dna Technology

Set 18: Genomics and Proteomics

Set 19: Applications and Ethics of Genetic Engineering and Biotechnology

Set 20: Developmental Genetics

Set 21: Quantitative Genetics and Multifactorial Traits

Set 22: Population and Evolutionary Genetics

Set 12 The Genetic Code And Transcription

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Set 12 The Genetic Code And Transcription

(Multiple Choice)

Free

The genetic code is fairly consistent among all organisms. The term often used to describe such consistency in the code is _.

A) universal
B) trans -specific
C) overlapping
D) exceptional
E) None of the answers listed is correct.

Answer

(Multiple Choice)

Free

Introns are known to contain termination codons (UAA, UGA, or UAG), yet these codons do not interrupt the coding of a particular protein. Why?

A) More than one termination codon is needed to stop translation.
B) These triplets cause frameshift mutations, but not termination.
C) Introns are removed from mRNA before translation.
D) UAA, UGA, and UAG are initiator codons, not termination codons.
E) Exons are spliced out of mRNA before translation.

Answer

(Multiple Choice)

Free

The genetic code is said to be triplet, meaning that there _.

A) are three bases in mRNA that code for an amino acid
B) are three amino acids per base in mRNA
C) are three "nonsense" triplets
D) may be three ways in which an amino acid may terminate a chain
E) None of the answers listed is correct.

Answer