Answer:
Due to the fact that the Upwelling brings all of the nutrients and food for the fish to the surface which is where all the fish will be feeding. ... Compare rivers and surface currents. Both rivers and surface currents are long, moving bodies of water.
The expected phenotypic ratio for a cross between two individuals that are heterozygous for a given trait is 3:1.
<h3>What is Phenotype?</h3>
This is referred to the physical characteristics of an organism such as the size, shape etc.
When two heterozygous traits are crossed:
Rr × Rr ⇒ RR Rr Rr rr
The ratio is therefore 3:1 of the dominant to recessive phenotype.
Read more about Phenotype here brainly.com/question/22117
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