OBJECTIVE LIFE SCIENCE
GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In dragons there is red skin color is more common in males as it is attached to the x-chromosome. In dragons, skin color follows which pattern of inheritance?
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codominance
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incomplete dominance
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complete dominance
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sex-linked
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Explanation:
Detailed explanation-1: -There are five basic modes of inheritance for single-gene diseases: autosomal dominant, autosomal recessive, X-linked dominant, X-linked recessive, and mitochondrial. Genetic heterogeneity is a common phenomenon with both single-gene diseases and complex multi-factorial diseases.
Detailed explanation-2: -Rr x Rr. You’ll note here that all offspring are not pink. Your genotypic ratio is 25% (RR), 50% (Rr), and 25% (rr). The phenotypic ratio is also the same in this case, with 25% red (RR), 50% pink (Rr), and 25% white (rr).
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