UKY BIO 148 Exam 2 Questions and Answers||A+ Solution guide(Verified)

UKY BIO 148 Exam 2 Questions and Answers||A+
Solution guide(Verified)




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Terms in this set (55)



What do activators do? turn on transcription at the time & location the
mRNA needs to be made


Where do point mutations usually the promoter (which typically alters amount of
occur? gene expression)


What is created from mutations? alleles, which creates new proteins & a new
phenotype

, Point mutation gene mutation in which a single base pair in DNA
has been changed


When do mutations occur? during DNA replication


Silent mutation A mutation that changes a single nucleotide, but
does NOT change the amino acid created


Missense mutation A base-pair substitution that results in a codon that
codes for a different amino acid


Nonsense mutation A mutation that changes an amino acid codon to 1
of the 3 stop codons, resulting in a shorter and
usually nonfunctional protein "STOP that
nonsense!"


How many tRNA bonding sights do 3
ribosomes have?


tRNA an adapter molecule that holds acids in place,
posses anticodons that base pair w/ mRNA
(antiparallel, complementary)