A Forensic Scientist Is Trying To Find Out The Number

Question: A forensic scientist is trying to find out the number of adenine bases in the DNA sample that he obtained from a crime scene. What can he assume about the number of adenine?

Answer:

Question: Which is an arrangement of genes consisting of an operator, a promoter, and a repressor?

Answer: RNA polymerase

anticodon

codon

operon

Question: Which best matches a type of genetic material with its description?

Answer: Nucleotides form a helical structure that is called a gene.

Genes combine to form structures called nucleotides.

Chromosomes create genes.

DNA is located in the nucleus.

Question: What was Friedrich Miescher’s contribution to the discovery of the genetic code?

Answer: He created the first photograph of the structure of DNA.

He discovered how the DNA bases pair together.

He created the first accurate model of DNA’s structure.

He extracted and observed DNA from white blood cells.

Question: Which of these is the primary site of protein synthesis?

Answer: mitochondria

cytoplasm

nucleus

ribosomes

Question:

Answer: silent

missense

nonsense

deletion

Question: Which describes something that occurs during translation?

Answer: A DNA template is used to create an mRNA strand.

A tRNA template is used to create a DNA strand.

A tRNA template is used to create an mRNA strand.

An mRNA template is used to create an amino acid chain.

Question: Which is a frameshift mutation?

Answer: substitution

nonsense

silent

deletion

Question: Which of the following correctly organizes these genetic terms in order from smallest to largest?

Answer: chromosome, gene, nucleotide, DNA molecule

nucleotide, gene, DNA molecule, chromosome

DNA molecule, nucleotide, gene, chromosome

DNA molecule, nucleotide, chromosome, gene

Question: How many genes make up the human genome?

Answer: four: adenine, thymine, guanine, and cytosine

23 pairs of genes

20,000-25,000 genes

3 billion genes