Question 1

Which of the following best describes the primary goal of genetics as introduced in the first lecture?

Accepted Answer

To understand the concepts and terminologies of genetics, and how genetic information is inherited and expressed.

Question 2

Which of the following is a correct definition of a gene as discussed in the course?

Accepted Answer

A segment of DNA that codes for a protein or functional RNA.

Question 3

During the discussion of Mendelian genetics, which of the following best explains the Law of Segregation?

Accepted Answer

Alleles for a trait separate during gamete formation, so each gamete carries only one allele for each gene.

Question 4

A cross between two heterozygous pea plants (Yy x Yy) for seed color results in which phenotypic ratio in the offspring?

Accepted Answer

$$3:1$$

Question 5

Which experiment provided the first strong evidence that DNA is the genetic material?

Accepted Answer

Griffith's transformation experiment with Streptococcus pneumoniae.

Question 6

If a DNA sample contains 30% adenine, what is the expected percentage of cytosine according to Chargaff's rules?

Accepted Answer

$$20\%$$

Question 7

Which of the following best describes the central dogma of molecular biology?

Accepted Answer

DNA is transcribed into RNA, which is then translated into protein.

Question 8

A woman with blood type A (genotype $$I^A i) $$and a man with blood type B (genotype $$I^B i) $$have a child. What is the probability that their child will have blood type O?

Accepted Answer

$$25\%$$

Question 9

Which of the following is NOT a function of DNA as discussed in the course?

Accepted Answer

Carrying out cellular respiration.

Question 10

Which scientist(s) used X-ray diffraction to help determine the double helix structure of DNA?

Accepted Answer

Rosalind Franklin

Question 11

If a mutation occurs in a gene that codes for an enzyme, which of the following is a possible outcome?

Accepted Answer

The enzyme may lose its function, leading to a metabolic disorder.

Question 12

Which of the following best explains why Mendel's work was not recognized until decades after his experiments?

Accepted Answer

The scientific community did not understand the mathematical approach he used.

Question 13

Which of the following is an example of a dihybrid cross?

Accepted Answer

Crossing two pea plants heterozygous for both seed color and seed shape.

Question 14

Which of the following statements about chromosomes is correct?

Accepted Answer

Chromosomes are structures made of DNA and proteins that carry genetic information.

Question 15

A geneticist is studying a trait controlled by two genes that assort independently. If both parents are heterozygous for both genes, what is the expected phenotypic ratio in the offspring?

Accepted Answer

$$9:3:3:1$$

Question 16

Which of the following best describes the significance of the Hershey-Chase experiment?

Accepted Answer

It demonstrated that DNA, not protein, is the genetic material in viruses.

Question 17

Which of the following is a real-world application of Mendelian genetics?

Accepted Answer

Predicting the likelihood of inheriting cystic fibrosis in a family.

Question 18

Which of the following is a correct representation of a monohybrid cross between two heterozygotes?

Accepted Answer

$$Yy 	imes Yy$$

Question 19

Which of the following best explains the concept of independent assortment?

Accepted Answer

Genes located on different chromosomes are inherited independently of each other.

Question 20

Which of the following is a direct consequence of a frameshift mutation in a coding region of DNA?

Accepted Answer

It can alter the reading frame, potentially resulting in a nonfunctional protein.

Genetics Course Schedule and Topic Overview

Guida di studio - Domande di pratica

Study guide - Flashcard