A bacterial mutant is unable to initiate replication. In this mutant a replication bubble and replication forks never form. This suggests a mutation in the gene coding for___?
a. initiator proteins
b. helicase
c. primase
d. DNA ligase
Answer: a. initiator proteins
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What is one advantage of using transgenic plant cells to produce human proteins for hormone replacement therapy?
a. Transgenic plants produce lower protein yields than transgenic animals. b. Transgenic plants produce higher protein yields than transgenic animals. c. Plant cells are less expensive to grow than other cell types d. Transgenic animals cannot produce human proteins. e. HIV is spread through proteins harvested from transgenic animals.
Linked genes are ____
a. genes whose effects combine to influence a single characteristic b. different alleles of the same gene c. genes that affect two different traits and lead to a 9:3:3:1 phenotype ratio in a dihybrid cross d. genes that do not sort independently because they are physically near each other on the same chromosome e. genes on two different chromosomes
Of the stages of translation, which one is basically the same in both eukaryotes and prokaryotes?
a. initiation b. termination c. translation d. elongation
Enzymes provide free energy for the reactions that they catalyze
1.True 2.False