Q: A mother with blood type O has a daughter who is type B and a son who is type A. What is the most likely genotype of the father?

I\textsuperscript{A}I\textsuperscript{B}

Q: Which of the following best describes the flow of genetic information according to the central dogma of molecular biology?

$$\text{DNA} \rightarrow \text{RNA} \rightarrow \text{Protein}$$

Question 1

Which of the following best describes the process of translation in gene expression?

Accepted Answer

The conversion of DNA into proteins using ribosomes and tRNA.

Question 2

A woman with normal vision (not colorblind) marries a man who is colorblind. Colorblindness is an X-linked recessive trait. What is the probability that their sons will be colorblind?

Accepted Answer

$$50\%$$

Question 3

Which of the following is a structural component found in all viruses?

Accepted Answer

A protein capsid

Question 4

A mother with blood type O has a daughter who is type B and a son who is type A. What is the most likely genotype of the father?

Accepted Answer

I	extsuperscript{A}I	extsuperscript{B}

Question 5

Which of the following best explains why viruses are not considered living organisms?

Accepted Answer

They cannot reproduce independently outside a host cell.

Question 6

During meiosis I, if nondisjunction occurs, how many of the resulting daughter cells will have an abnormal number of chromosomes?

Accepted Answer

Two

Question 7

Which of the following is an example of a genetic disorder caused by a chromosomal number alteration?

Accepted Answer

Down syndrome

Question 8

Which enzyme is responsible for synthesizing RNA from a DNA template during transcription?

Accepted Answer

RNA polymerase

Question 9

A plant with genotype YyWw is crossed with another plant with the same genotype. Using a Punnett square, what is the probability of obtaining an offspring with genotype yyww?

Accepted Answer

$$\dfrac{1}{16}$$

Question 10

Which of the following best describes a missense mutation?

Accepted Answer

A mutation that changes one amino acid to another.

Question 11

Which of the following is required for transcription to occur in eukaryotic cells?

Accepted Answer

DNA template, RNA polymerase, and nucleotides

Question 12

Which of the following best describes the flow of genetic information according to the central dogma of molecular biology?

Accepted Answer

$$	ext{DNA} ightarrow 	ext{RNA} ightarrow 	ext{Protein}$$

Question 13

Which of the following is a function of tRNA during translation?

Accepted Answer

Carrying amino acids to the ribosome

Question 14

If a DNA sequence is $$3' - TACGATTGCCA - 5'$$, what is the corresponding mRNA sequence?

Accepted Answer

$$5' - AUGCUAACGGU - 3'$$

Question 15

Which of the following best explains how vaccines protect us from viruses?

Accepted Answer

They stimulate the immune system to recognize and respond to viral antigens.

Question 16

Which of the following is a frameshift mutation?

Accepted Answer

An insertion or deletion of one or two nucleotides.

Question 17

Which of the following is true about homologous chromosomes?

Accepted Answer

They carry the same genes but may have different alleles.

Question 18

Which of the following best describes the role of ribosomes in the cell?

Accepted Answer

They synthesize proteins by linking amino acids together.

Question 19

Which of the following is a true statement about true-breeding organisms?

Accepted Answer

They produce offspring with the same phenotype when self-fertilized.

Question 20

Which of the following is a correct match between a mutation type and its effect?

Accepted Answer

Silent mutation: does not change the amino acid sequence

Genetics, Gene Expression, and Viruses: Study Guide for General Biology

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