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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<span>A Simple Compound Microscope</span>
B) An increase in the overall temperature of the Earth
B is the answer because global climate change is the increase of the overall temperature of the planet.
hope that helps :)
tolerate conditions that are normally fatal
