MRNa's are composed of codons. Codons are a sequence of three nucleotides that come together to be transcribed by an anti-codon to form units for genetic coding. For example, AUG is a codon and upon transcribing becomes the protein Methionine. In this case, they differ in the terminal codon. UAG is a stop codon while UAC is Tyrosine. The first sequence is complete,while the other one is not.
Answer:
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Refers to... <span>water particles and the transfer of energy.</span>
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.
- <em>Other options, such as </em><u><em>an increase in food availability</em></u><em>, a</em><u><em> decrease in tuna fishing
</em></u><em> or </em><u><em>a decrease in tuna predators</em></u><em>, are environmental factors that contribute to increased genetic variability.</em>