Which cross will yield four phenotypes in the 1:1:1:1 ratio?. .A] rryy x rryy. B] RrYy x rryy. C] RrYy x RrYy. D] RRYY x rryy
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Answer:
Explanation:
We recognize that total occurrence equals new cases of disease over time divided by the number of people at risk at the onset.
Mathematically:
Given that:
Number of the population at risk = 1000 individuals
New cases during Jan 1 - Dec 31 = 60 because;
At 20 occurred on June 30 & 40 on Sept. 30) & no new cases were identified after that:
∴