$ \text{Percentage Similarity} = \frac{\text{Number of Identical Bases}}{\text{Total Number of Bases}} \times 100 $

Question 1

Which of the following best defines genomics?

Accepted Answer

The study of the structure, function, evolution, and mapping of genomes.

Question 2

What was one major discovery from the Human Genome Project?

Accepted Answer

Humans have fewer protein-coding genes than previously expected.

Question 3

How do morphological data provide evidence for evolution?

Accepted Answer

By showing similarities in body structures among different species.

Question 4

Which of the following is a biochemical method for determining evolutionary relationships?

Accepted Answer

Comparing amino acid sequences of proteins.

Question 5

What can DNA sequence similarities between two species indicate?

Accepted Answer

A recent common ancestor.

Question 6

Which of the following is a fundamental molecular feature shared by all domains of life?

Accepted Answer

The use of DNA as genetic material.

Question 7

Which process is shared by all living organisms?

Accepted Answer

Cellular respiration

Question 8

Which structural feature is evidence for the common ancestry of all life?

Accepted Answer

The presence of ribosomes in cells.

Question 9

A scientist compares the amino acid sequence of cytochrome c in humans and chimpanzees. What does a high degree of similarity suggest?

Accepted Answer

Humans and chimpanzees share a recent common ancestor.

Question 10

Which of the following is NOT evidence for evolution?

Accepted Answer

Identical DNA sequences in unrelated species.

Question 11

Which equation would you use to calculate the percentage similarity between two DNA sequences?

Accepted Answer

$ 	ext{Percentage Similarity} = \frac{	ext{Number of Identical Bases}}{	ext{Total Number of Bases}} 	imes 100 $

Question 12

Which of the following best describes a homologous structure?

Accepted Answer

A structure that is similar in different species due to shared ancestry.

Question 13

Which of the following is an example of a process shared by all living organisms?

Accepted Answer

Replication of genetic material

Question 14

Which of the following statements about the Human Genome Project is correct?

Accepted Answer

It revealed that most human DNA does not code for proteins.

Question 15

Which of the following is a real-world application of genomics?

Accepted Answer

Identifying genetic mutations responsible for inherited diseases.

Question 16

Which of the following is a molecular feature that supports the theory of common ancestry?

Accepted Answer

The universal genetic code

Question 17

A fossil shows a transitional form between fish and amphibians. What type of evidence does this provide?

Accepted Answer

Morphological and geological evidence for evolution

Question 18

Which of the following best explains why protein amino acid sequences are used to determine evolutionary relationships?

Accepted Answer

Because they change slowly over time, allowing for comparison between distant species.

Question 19

Which of the following is NOT a process shared by all living organisms?

Accepted Answer

Photosynthesis

Question 20

Which of the following is structural evidence for how species are related?

Accepted Answer

Similar bone arrangements in the limbs of mammals

Evidence for Evolution and Common Ancestry: Genomics, Molecular, and Cellular Features

Study Guide - Practice Questions