Transcription

Question 1

Mendelian Genetics Definition

Answer 1

Distinct unit of heredity

Question 2

molecular definition

Answer 2

unique combination of DNA bases that provide instructions for making a protein

Question 3

promoter

Answer 3

transcription initiation site

Question 4

terminator

Answer 4

stops transcription

Question 5

operon

Answer 5

cluster of genes controlled by one promoter

Question 6

open reading frame

Answer 6

region that is transcribed

Question 7

exons

Answer 7

protein coding sequences

Question 8

introns

Answer 8

non coding sequencees

Question 9

transcription

Answer 9

nucleotide to nucleotide

Question 10

mRNA

Answer 10

RNA that contains the information for the synthesis of a particular polypeptide

Question 11

Steps of mRNA transcription

Answer 11

initiation, elongation, termination

Question 12

transcription unite

Answer 12

stretch of DNA that is transcribed

Question 13

promoter

Answer 13

DNA sequence where RNA polymerase attaches

Question 14

template strand

Answer 14

one of the two DNA strands serves as template for RNA synthesis

Question 15

elongation

Answer 15

RNA polymerase untwists the double helix, moves along DNA adds nucleotides to the 3’ end of growing RNA molecule

Question 16

Termination

Answer 16

• occurs at polyadenylation signal sequence in eukaryotes
• terminates at terminator (hairpin structure) in bacteria

Question 17

RNA modification

Answer 17

needed in eukaryotes before mRNA translates into protein

Question 18

Splicing

Answer 18

introns are later removed or excised and exons are connected or spliced

Question 19

Spliceosome

Answer 19

large molecular complex made of several proteins and non-coding RNA
- removes introns and joins together exons