Ask a New Question
Menu

Consider the following scenario:

An animal is born with a shorter tail. This makes no difference to its ability to survive or reproduce, but as a result of pure luck, the animal survives, reproduces, and passes its shorter tail down to its offspring. Over time, the species develops a shorter tail.

What type of process is described in this scenario?

(1 point)
Responses

genetic modification
genetic modification

artificial selection
artificial selection

genetic drift
genetic drift

natural selection
natural selection
Skip to navigation

The process of altering the genome of one species by adding genes from another species in order to gain a beneficial trait is known as(1 point)
Responses

artificial selection.
artificial selection.

genetic drift.
genetic drift.

genetic modification.
genetic modification.

natural selection.
natural selection.

Consider the following scenario:

Some fish in a murky underground lake have lighter scales than the others. This makes it slightly harder for the lighter fish to escape detection by predators, but most light-colored fish live long enough to reproduce. A natural event separates the dark-scaled fish from their light-scaled cousins, and as a result, a new species of dark-scaled fish emerges.

Which statement accurately describes the scenario?

(1 point)
Responses

The fish survived because of a non-genetic advantage.
The fish survived because of a non-genetic advantage.

The fish experienced an evolutionary change because of genetic drift.
The fish experienced an evolutionary change because of genetic drift.

The fish survived because of an inheritable advantage.
The fish survived because of an inheritable advantage.

The fish experienced an evolutionary change because of natural selection.
The fish experienced an evolutionary change because of natural selection.
Skip to navigation

Which scenario accurately describes an example of artificial selection?(1 point)
Responses

A seal living in a coastal region where food is abundant thrives and reproduces because of the abundance of food.
A seal living in a coastal region where food is abundant thrives and reproduces because of the abundance of food.

A farmer intentionally breeds oranges to be more resistant to aphids.
A farmer intentionally breeds oranges to be more resistant to aphids.

A woman who worked hard to become a superior athlete has children who also turn out to be dedicated athletes.
A woman who worked hard to become a superior athlete has children who also turn out to be dedicated athletes.

A scientist modifies the genes of a tomato plant to make it more resistant to disease.

ver many generations, there is a good chance that an advantageous gene will be shared by every organism of the same species or that a new species will emerge. These long-term outcomes are called(1 point)
Responses

evolution.
evolution.

population.
population.

hybridization.
hybridization.

adaptation.

1 answer

Let's go through each part of your scenario and answer the questions based on the descriptions provided.

  1. The scenario of the animal with a shorter tail:

    • Answer: genetic drift
    • Explanation: The shorter tail does not affect the ability to survive or reproduce (it's neutral), and its persistence in the population is due to random chance (luck) rather than a selective advantage. This is a classic example of genetic drift.

  2. The process of altering the genome of one species by adding genes from another species:

    • Answer: genetic modification
    • Explanation: This refers to genetic engineering where genes from one organism are inserted into another organism to create a specific trait or benefit.

  3. The scenario of the fish in the murky underground lake:

    • Answer: The fish experienced an evolutionary change because of natural selection.
    • Explanation: The lighter fish have a disadvantage in terms of predation, and thus are more likely to be selected against. The separation event leads to evolutionary change over time (speciation) fueled by natural selection.

  4. The scenario describing an example of artificial selection:

    • Answer: A farmer intentionally breeds oranges to be more resistant to aphids.
    • Explanation: This is a clear example of artificial selection as it involves human intervention in breeding, aiming to enhance a specific trait.

  5. The long-term outcomes of advantageous genes shared by organisms of the same species:

    • Answer: evolution
    • Explanation: Over many generations, changes in hereditary traits in a population lead to evolution, which can include adaptations and possibly speciation.

Feel free to ask if you have any further questions or need additional clarification on these topics!