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You are studying mice and you discover a maternal effect gene you call pinto. pinto mRNA...
15. You are studying com plants. You were able to determine that the gene for kernel color (C-colored and no color) and kernel waxiness (W = waxy and not waxy) are on the same chromosome and are 30 CM apart. You are ultimately interested in determining the potential phenotypic ratio if crossing over occurs. You start by crossing a male who is homozygous dominant for both genes with a female who is homozygous recessive for both genes. The F1 heterozygotes...
You are what your mother eats? -Maternal diet and offspring obesity Maternal diet, which may directly affect the offspring genome, is an important field of study for population health considering the number of US mothers which are overweight or obese. As discussed in class, elevated maternal obesity risk factors result in an increased obesity risk of the offspring, but equally presents a higher risk for stillbirth, neural tube defects, increased inflammatory cytokine levels and results in a higher risk for...
2. A dominant allele H reduces the number of body bristles that Drosophila flies have, giving rise to a “hairless” phenotype. In the homozygous condition, H is lethal. An independently assorting dominant allele S has no effect on bristle number except in the presence of H, in which case a single dose of S suppresses the hairless phenotype, thus restoring the "hairy" phenotype. However, S also is lethal in the homozygous (S/S) condition. What ratio of hairy to hairless flies...