Suppose members of a true-breeding strain of salamanders with yellow stripes are crossed with a true-breeding strain with red stripes. Red and yellow are two alleles of the same gene. The resulting offspring have both yellow stripes and red stripes. Which dominance pattern is most consistent with the observations?

Question

Biology

Alexa Cunningham

14 February, 21:38

Suppose members of a true-breeding strain of salamanders with yellow stripes are crossed with a true-breeding strain with red stripes. Red and yellow are two alleles of the same gene. The resulting offspring have both yellow stripes and red stripes. Which dominance pattern is most consistent with the observations?

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Answers (1)

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Lilly Klein · Answer 1

Codominance

Explanation:

Codominance is the condition in which both the alleles of a trait are dominant and are equally expressed when comes together in the offspring. For example in ABO blood grouping in humans A and B allele are dominant so when they both come together in an offspring then they produce AB blood group in that offspring.

Here when true-breeding strains of salamander having yellow and red stripes are crossed together they produce offsprings having both yellow and red stripes that shows that the traits are codominant.

Therefore the pattern of codominance is most consistent with this observation.