If you wanted to present evidence that red panda populations were becoming less diverse over time, which choice correctly identifies the independent and dependent variables you would choose to use in your graph?

Question

(1 point)
Responses

Independent = Generation and Dependent = Nucleotide Diversity
Independent = Generation and Dependent = Nucleotide Diversity

Independent = Nucleotide Diversity and Dependent = Generation
Independent = Nucleotide Diversity and Dependent = Generation

Independent = Acres of Deforested Land and Dependent = Generation
Independent = Acres of Deforested Land and Dependent = Generation

Independent = Generation and Dependent = Acres of Deforested Land

Answer 1

The correct choice for identifying the independent and dependent variables to present evidence that red panda populations were becoming less diverse over time is:

Independent = Generation and Dependent = Nucleotide Diversity

This choice correctly reflects that you would track changes in nucleotide diversity (a measure of genetic diversity) across different generations of red pandas to demonstrate how their genetic diversity is changing over time.

Answer 2

Which statement best explains why the nucleotide diversity of Red Pandas decreased over five generations?

(1 point)
Responses

As the population of red pandas decreased, there was more food for the red pandas to eat.
As the population of red pandas decreased, there was more food for the red pandas to eat.

As the acres of deforested land increased, there was more food for the red pandas to eat.
As the acres of deforested land increased, there was more food for the red pandas to eat.

As the population of red pandas decreased, there were a lesser number of genes to be passed down.
As the population of red pandas decreased, there were a lesser number of genes to be passed down.

As the acres of deforested land increased, there were a greater number of genes to be passed down.

Answer 3

The statement that best explains why the nucleotide diversity of red pandas decreased over five generations is:

As the population of red pandas decreased, there were a lesser number of genes to be passed down.

This statement correctly identifies that a smaller population size typically leads to reduced genetic diversity, as fewer individuals mean fewer unique alleles and a greater likelihood of inbreeding, which can further decrease genetic variation over generations.

Answer 4

A gardener performs experiments on her tomato plants. When graphing her data, which factor is an independent variable?(1 point)
Responses

the average circumference of each plant’s fruit
the average circumference of each plant’s fruit

the number of fruit per plant
the number of fruit per plant

the height of each plant
the height of each plant

the amount of light each plant receives

Answer 5

In the context of a gardener performing experiments on tomato plants, the independent variable would typically be the factor that is manipulated or controlled to observe its effects on the dependent variable. In this case, the most suitable independent variable from the options provided would be:

the amount of light each plant receives.

This is because the amount of light can be adjusted to see how it affects the growth and development of the plants, such as their height, the average circumference of their fruit, or the number of fruits per plant.

Answer 6

Suppose the mutation for the sickle cell disease gene first appeared in a region without malaria. The first carrier would have(1 point)
Responses

been more likely to survive and reproduce than his peers.
been more likely to survive and reproduce than his peers.

been less likely to survive and reproduce than his peers.
been less likely to survive and reproduce than his peers.

died from sickle cell disease before reproducing.
died from sickle cell disease before reproducing.

had the same likelihood to survive and reproduce as his peers.

Answer 7

If the mutation for the sickle cell disease gene first appeared in a region without malaria, the correct response would be:

been more likely to survive and reproduce than his peers.

This is because carriers of the sickle cell trait (one copy of the sickle cell gene and one normal gene) generally exhibit a survival advantage in regions where malaria is present, as the sickle cell trait provides some resistance to malaria. However, in regions without malaria, the carrier would not face the selective pressure that favors the trait. Therefore, the first carrier would likely be more likely to survive and reproduce compared to their peers, assuming no severe health complications arise directly from the sickle cell mutation itself.

Answer 8

Which of the following scenarios would reduce the number of inheritable traits in a population, causing the individuals in that population to remain very similar to one another?(1 point)
Responses

A desert that has existed for millennia.
A desert that has existed for millennia.

A lake that is drying up due to shifts in river flow.
A lake that is drying up due to shifts in river flow.

A forest that is being converted into farmland.
A forest that is being converted into farmland.

A swamp that is being drained in order to build houses.

Answer 9

The scenario that would reduce the number of inheritable traits in a population, causing the individuals in that population to remain very similar to one another, is:

A forest that is being converted into farmland.

This scenario typically involves habitat destruction and fragmentation, which can lead to a decrease in genetic diversity. As habitats are altered, populations may become isolated and experience a reduction in gene flow. This isolation can lead to inbreeding and a reduction in the number of inheritable traits, making individuals in that population more genetically similar to one another.