The expected phenotypic ratio for a cross between two individuals that are heterozygous for a given trait is 3:1.
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.
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Answer:
Because the sika has more than one main food source incase all the shrubs die it can move on to the grass without a problem.
Explanation:
So the answer is A.
D. or A. if that doesnt work
