DNA Review guide answers
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DNA Reproduces
S phase(interphase)
Nucleotides
Transcription
Replication
Base
Translation
Chargaff
Rosalind Franklin
Uracil
Thymine
Pyrimadine
Dna: 2 strands, RNA 1 strand; DNA-T, RNA-U; DNA-Deoxyribose sugar, RNA-ribose sugar; DNA1 form, RNA-3 forms
DNA Polymerase
Watson and Crick
Replication fork
DNA Helicase
Griffith
mRNA
tRNA
Nitrogenous
Germline
Topoismerase
Frameshift
Non-sense
Amino Acid
Hydrogen
Replication Fork
RNA Polymerase
Anticodon
AUG- Methionine
Methionine
UAA, UAG, UGA
mRNA
Gene
Chromosomes
Genetic Mutation Worksheet Answers
1.
A. Frameshift: Addition/Deletion of a base: shifts the sequence to the left or right changing all
codons.
b. Substitution: Mis-sense: changes one codon, changes the protein
Non-sense: changes the codon to a stop
Silent: changes the codon but codes for the same Amino Acid so no effect will be seen.
c. Germline: carried on sex chromosomes passed on from generation to generation.
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6.
Substitution: Silent- changes the codon but codes for the same Amino Acid so it does not
change the protein.
Serine: UCU, UCC, UCG, UCA
Tryptophan: UGG
TEF ATC ATA TET HER AT: does not make sense it is a point deletion: frameshift
29
1- ser, lue, ala, ther, arg, seri
2- ser lue ala ther, seri, seri
3- ser, lue, ala, ther, arg, ser
# 1 and #3 code for the same protein
7. A. CCC GAA GAA AAA- prol glut acid glut acid lysine
b. point mutation- 5th base is changed from T to and A
c. No, it would not be the same protein being made.
DNA/RNA Protein Synthesis Review Guide Answers.
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Phosphate, sugar and base
Twisted ladder; sides are phosphates and sugars and steps are the bases
A-T, C-G
TAGCTAAATTCCGGCGTAATGCGCAATCCTAG
Break hydrogen bonds between DNA bases to unwind the 2 strands
DNA polymerase attaches the correct nucleotides to make a new strand of DNA
2 similarities: They are both made of nucleotides, Both have ACG
4 Differences: DNA: 2 stranded RNA 1 stranded, DNA: Deoxyribose sugar RNA:Ribose sugar,
DNA: 1 form RNA:3 forms DNA:T RNA:U
mRNA: Carries the code for tRNA to get amino acids to make a protein
tRNA: transfers amino acids from cytoplasm back to mRNA to make a protein
rRNA: makes up ribosomes and enables ribosomes to attach to mRNA
RNA polymerase attaches to DNA and breaks hydrogen bonds between DNA bases. Then it
attaches correct nucleotides to make RNA. Occurs in the nucleus.
Amino acids
Ribosome reading mRNA 3 bases at a time called a codon. This codes for specific amino acids to
make a protein. Occurs in the cytoplasm.
3 bases in mRNA that code for amino acids
3, 1
AUG CAU UUU GGA AGA ACC UCC GCA CCG CAG UAA
Start, hist, phen, gly, arg, thre, ser, ala, prol, glut, stop