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pochemuha
2 years ago
6

Help please I have no time

Biology
2 answers:
shutvik [7]2 years ago
6 0
I think it’s the first one
ikadub [295]2 years ago
4 0
I think it’s the first one
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Which environmental factor could lead to a decrease in genetic variation in a population of tuna?
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Answer:

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

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.

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3 years ago
Only answer if you’re really good at science! no spams!
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Lol it’s the first one :)
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Why does the energy decrease as we go along the food chain from producers to tertiary consumers?
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Because less animals means less energy that can be used.

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How does the possible impact of a chromosomal mutation that occurs?
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  If the mutation occurs during meiosis, the mutation will be incorporated into a gamete. If that gamete is the one that eventually fuses with another gamete (i.e. if it's the sperm that fertilizes the egg), that mutation will be passed on to the offspring. As all the offspring's cells are the result of the first two gametes, all the organism's cells will have that mutation. Obviously this can have dire consequences for the offspring, if the mutation is harmful. 
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