A defective protein can be produced by a cell when a mutation has which of the following effects?

A. Messenger RNA is prevented from being made.
B. It causes cells to divide in an uneven way.
C. An additional mRNA strand is caused to form
D. The amino acid sequence coded by the gene is altered

Which of the following is the best explanation of the process of translation?

A. An mRNA strand is copied from the original DNA sequence
B. Amino acids are placed in order to build a protein
C. A place of dna is moved along the chromosome
D. DNA is changed due to a Mistake or environmental factor

A strand of dna is made of a segment of nucleotides in this order: GTCTAG. Which of the following sequence would be the correct complementary

A. GTCTAG
B. CAGATC
C. GUCUAG
D. CAGAUC

There are many factors that may cause a mutation in a gene. Which of the following events would be most likely to cause a mutation

A. mRNA travels out of the nucleus
B. mRNA is released from the dna strand
C. A nucleotide is inserted into a dna strand
D. An enzyme transcribes mRNA in the nucleus