Exam 8: What Genes Are

A scientist uses polymerase chain reaction (PCR)to compare the sequence of a disease and a healthy gene.The scientist finds that these two genes are identical except for one G in place of a T at position 256 in the gene.This type of mutation is a(n)

The DNA primers used in polymerase chain reaction (PCR)are

A scientist adds a single polymerase and primer to a polymerase chain reaction (PCR)but does not add nucleotides.How many strands would be present after three replications if a single original strand was present? Explain your answer.

Along one side of a DNA molecule,the nucleotides are connected to each other by

The following figure shows the first cycle in polymerase chain reaction (PCR).What is the role of the structure marked "P" in this figure?

How many phosphate groups are present in a single strand of DNA?

Which of the following does NOT correctly state a difference between prokaryotic and eukaryotic DNA organization?

A permanent change in the DNA base sequence due to an uncorrected mismatch error is called a(n)

It can be said that prokaryotic genomes are more efficient than eukaryotic genomes.Refute or support this claim using evidence.

When a cell divides,it

Which of the following must occur for a mismatch error to be repaired?

Most eukaryotic DNA is

If a segment of double-stranded DNA has 20 percent A,how much of it is C?

If one strand of DNA has the sequence CGATT,the sequence of the other strand of the same molecule will be

A rapidly dividing cell is exposed to a chemical that converts the bond that forms between adenine and thymine to a covalent bond.Which of the following is most likely to occur?

MATCHING Put the following in order from smallest to largest. -This is the largest.

A scientist identifies a new cell with a single chromosome that is able to do gene transfer.

DNA replication

Which of the following is true of eukaryotic genomes?

The polymerase chain reaction (PCR)is used to