112k views
2 votes
Which environmental factor could lead to a decrease in genetic variation in a population of tuna?

an increase in food availability
an increase in pollution
a decrease in tuna fishing
a decrease in tuna predators

2 Answers

5 votes

Answer:

B

Step-by-step explanation:

Took the Test

User Johnny John Boy
by
8.0k points
4 votes

Answer:

The environmental factor that could lead to a decrease in genetic variation in a tuna population is an increase in pollution (second option).

Step-by-step explanation:

There is a correlation between genetic variability and environmental pollution, the latter being a factor that impacts negatively on the variability of a specific population.

The concept of pollution stress not only implies a low rate of reproduction, but it is also a factor that prevents genetic exchange with other populations, which is a factor that makes the genetic variability decrease in a population.

For these reasons an increase in pollution implies a decrease in genetic variability in a tuna population.

  • Other options, such as an increase in food availability, a decrease in tuna fishing or a decrease in tuna predators, are environmental factors that contribute to increased genetic variability.
User Quanguyen
by
7.6k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories