Which statement is true?(1 point)

Question

Responses

Genetic and epigenetic changes can be explained by DNA sequence.
Genetic and epigenetic changes can be explained by DNA sequence.

Epigenetic changes cannot be explained by DNA sequence, but genetic changes can.
Epigenetic changes cannot be explained by DNA sequence, but genetic changes can.

Genetic and epigenetic changes cannot be explained by DNA sequence.
Genetic and epigenetic changes cannot be explained by DNA sequence.

Epigenetic changes can be explained by DNA sequence, but genetic changes cannot.

Answer 1

The correct statement is: Epigenetic changes cannot be explained by DNA sequence, but genetic changes can.

Genetic changes involve alterations in the DNA sequence itself, such as mutations, while epigenetic changes involve modifications that affect gene expression without changing the underlying DNA sequence, such as DNA methylation or histone modification.

Answer 2

Which animal trait was Darwin’s theory of natural selection based on?(1 point)
Responses

swimming ability of Galápagos iguanas
swimming ability of Galápagos iguanas

coloration of peppered moths
coloration of peppered moths

beak morphology of Galápagos finches
beak morphology of Galápagos finches

predatory behavior of foxes

Answer 3

Darwin’s theory of natural selection was primarily based on the beak morphology of Galápagos finches. He observed different beak shapes and sizes among the finch species on the Galápagos Islands, which correlated with their feeding habits and the types of available food, contributing to his ideas about adaptation and natural selection.

Answer 4

What is most likely to happen if predators are introduced to an ecosystem with no known predators?(1 point)
Responses

An increase in species migration.
An increase in species migration.

A decrease in species abundance.
A decrease in species abundance.

A decrease in species evolution.
A decrease in species evolution.

An increase in species differentiation.

Answer 5

The most likely outcome if predators are introduced to an ecosystem with no known predators is a decrease in species abundance. The introduction of predators can lead to increased predation on existing species, which may reduce their populations and overall abundance in the ecosystem.

Answer 6

Which representation of data visualizes potential relationships between variables?(1 point)
Responses

a chart
a chart

a table
a table

a graph
a graph

a list

Answer 7

The best representation of data that visualizes potential relationships between variables is a graph. Graphs, such as scatter plots or line graphs, allow for the visualization of relationships and trends between different variables effectively.

Answer 8

How did Drs. Peter and Mary Grant verify Darwin’s theory of natural selection?(1 point)
Responses

by studying a different group of organisms
by studying a different group of organisms

by finding new species that adapted to a different environment
by finding new species that adapted to a different environment

by assessing changes in another animal trait
by assessing changes in another animal trait

by making observations over a long period of time

Answer 9

Drs. Peter and Mary Grant verified Darwin’s theory of natural selection by making observations over a long period of time. They conducted extensive research on the Galápagos finches, specifically observing changes in beak size and shape in response to environmental changes, thus demonstrating natural selection in action.