Which of the following best describes biological evolution?(1 point)

Question

Responses

The process of adapting to new environments during an organism's lifetime
The process of adapting to new environments during an organism's lifetime

The process of creating a new species between two different species
The process of creating a new species between two different species

Changes in the inherited traits of a population over many generations
Changes in the inherited traits of a population over many generations

The development of an organism from birth to adulthood.
The development of an organism from birth to adulthood.
Question 2
Which of the following statements is true about the competitive exclusion principle?(1 point)
Responses

It implies that competition has no impact on species evolution
It implies that competition has no impact on species evolution

It states that two species can occupy the same niche indefinitely
It states that two species can occupy the same niche indefinitely

It asserts that two species with identical niches cannot live in the same space at the same time.
It asserts that two species with identical niches cannot live in the same space at the same time.

It suggests that natural selection favors the coexistence of competing species
It suggests that natural selection favors the coexistence of competing species
Question 3
Which of these is an example of adaptation?(1 point)
Responses

A bear's sharp claws
A bear's sharp claws

A polar bear's white fur in snowy environments
A polar bear's white fur in snowy environments

A bear's ability to hibernate
A bear's ability to hibernate

A black bear's fur in a forest
A black bear's fur in a forest
Question 4
What is reproductive isolation?(1 point)
Responses

The inability of two populations to reproduce due to geographical barriers
The inability of two populations to reproduce due to geographical barriers

The inability of two populations to reproduce due to biological barriers
The inability of two populations to reproduce due to biological barriers

The ability of a population to produce offspring only asexually
The ability of a population to produce offspring only asexually

The process of sexual selection within a population
The process of sexual selection within a population
Question 5
Which of these can lead to speciation?(1 point)
Responses

Genetic drift
Genetic drift

Natural selection
Natural selection

Reproductive isolation
Reproductive isolation

All of the above
All of the above
Question 6
Which of the following statements about natural selection is true?(1 point)
Responses

It can only occur when environmental conditions are stable
It can only occur when environmental conditions are stable

It acts on the phenotype of an organism
It acts on the phenotype of an organism

It acts directly on the genotype of an organism
It acts directly on the genotype of an organism

It always results in the adaptation of individuals to their environment
It always results in the adaptation of individuals to their environment
Question 7
What is the role of mutation in evolution?(1 point)
Responses

It creates new alleles and genetic variation
It creates new alleles and genetic variation

It results in the adaptation of an organism to its environment
It results in the adaptation of an organism to its environment

It directly influences reproductive isolation
It directly influences reproductive isolation

It reduces the genetic diversity within a population
It reduces the genetic diversity within a population
Question 8
Which of the following factors is most likely to contribute to reproductive isolation?(1 point)
Responses

Increased competition for food resources
Increased competition for food resources

A sudden change in climate
A sudden change in climate

Physical barriers separating populations
Physical barriers separating populations

Random fluctuations in allele frequencies
Random fluctuations in allele frequencies
Question 9
What does the term "fitness" refer to in the context of natural selection?(1 point)
Responses

The lifespan of an organism in its environment
The lifespan of an organism in its environment

The intelligence of an organism to solve complex problems
The intelligence of an organism to solve complex problems

The number of offspring an organism produces that survive long enough to reproduce
The number of offspring an organism produces that survive long enough to reproduce

The ability of an organism to lift heavy objects
The ability of an organism to lift heavy objects
Question 10
Genetic drift refers to:(1 point)
Responses

the isolation of populations leading to speciation
the isolation of populations leading to speciation

the gradual change in a population due to natural selection
the gradual change in a population due to natural selection

the random variation of allele frequencies in a small population
the random variation of allele frequencies in a small population

the transfer of genes between different species
the transfer of genes between different species
Skip to navigation

Answer 1

Here are the best answers for each of the questions you've provided:

Question 1: Which of the following best describes biological evolution?

• Changes in the inherited traits of a population over many generations

Question 2: Which of the following statements is true about the competitive exclusion principle?

• It asserts that two species with identical niches cannot live in the same space at the same time.

Question 3: Which of these is an example of adaptation?

• A polar bear's white fur in snowy environments

Question 4: What is reproductive isolation?

• The inability of two populations to reproduce due to biological barriers

Question 5: Which of these can lead to speciation?

• All of the above (Genetic drift, Natural selection, Reproductive isolation)

Question 6: Which of the following statements about natural selection is true?

• It acts on the phenotype of an organism

Question 7: What is the role of mutation in evolution?

• It creates new alleles and genetic variation

Question 8: Which of the following factors is most likely to contribute to reproductive isolation?

• Physical barriers separating populations

Question 9: What does the term "fitness" refer to in the context of natural selection?

• The number of offspring an organism produces that survive long enough to reproduce

Question 10: Genetic drift refers to:

• the random variation of allele frequencies in a small population

These responses align with key concepts in evolutionary biology.