Question
help with just 2.3 only, the last question and the numbers on the chart wasn't visible reason why I rewrote some of them . thanks
Coat color variation in mammals has long served as one of most loci and 800 alleles affecting coat color described in mice fruitful examples of genetics, with over 120 adaptive For this question, we will consider the to transition from dark to light coat coloration that accompanied th of mice from of mouse, the beach among two sl The ancestral species was darkly colored whi species was more lightly colored, ic the derived mouse living on lightly colored consistent with the selective Pressures that come when you are a dark F1 sand. The of the two parental species along with a representative individual and representatives from the F2 neration are shown below. enoryP 2.1 (10) Assume that you only had the data shown above for the parental lines (ancestral and derived species) and the F1. What inferences would you make about the mode of inheritance for the overall (whole body) coat color? Support your inferences clearly Ido not just write the mode of inheritance, explain why you arrived at that answer 2.2 (10) With the added data from the F2, what inferences might you make about the mode of inheritance for the overall (whole body coat color? Support your inferences clearly [do not just write the mode of inheritance, explain why you arrived at that answer. Researchers performed genetic mapping experiments to locate genes involved in the determination of associated and found two loci MCIR (chromosome 1), and AGOUTI (chromosome that both affect pigmentation. Each of these loci have two alleles, one associated with light coloration (the Lallele) and one with the dark coloration (the D allele). When the researchers analyzed the effect of the alleles at these two loci on cheek coloration, the following results were obtained. The y-axis of the is a measure of color where low numbers represent dark graph coloration and large numbers represent lighter coloration
Explanation / Answer
Answer 2.3
The mode of inheritance is polygenic inheritance. There is a blend of colors. When more number of 'D' alleles are present, then the color is dark; when only one 'L' allele is there, and the other three are 'D' then the color is slightly dark.
When two 'L' alleles are there, and two 'D' alleles are there, then the color is intermediate.
When only one 'D' allele is there, then very light color (agouti) is there.
