Answer:
a dominant mutation
Explanation:
A monohybrid testcross is a cross-breeding experiment used to determine if an individual exhibiting a dominant phenotype is homo-zygous dominant or heterozygous for a particular phenotypic trait (in this case, wing length). In a monohybrid testcross, a 1:1 phenotypic ratio shows that the dominant parental phenotype was a heterozygote for a single gene that has complete dominance. Moreover, a 3:1 ratio in the F2 is expected of a cross between heterozygous F1 individuals, which means that 75% of individuals with short wings have the dominant allele that masks the expression of the long-wing trait (i.e. the recessive allele).
The supplement being taken is Vitamin K in this type of scenario.
<h3>What is Vitamin K?</h3>
This is a type of vitamin which is responsible for the clotting of blood and healing of injuries in the body.
This is achieved by coagulation of the blood to stop bleeding however since the patient has blood clots and takes anti-coagulation medication it is best to avoid vitamin K.
Read more about Vitamin K here brainly.com/question/4053919
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