The following mouse pedigree shows the segregation of both a dominant and a rece
ID: 260749 • Letter: T
Question
The following mouse pedigree shows the segregation of both a dominant and a recessive trait. (Assume all phenotypes are completely penetrant). female showng dominant trait only male showng recessive trait only L-male not showing either trait What is the genotype of mouse 1? For your answer, use D to designate the allele for the dominant trait (with d representing the corresponding wild type allele) and r to designate the allele for the recessive trait (with R representing the corresponding wild type allele) Gentotype of If the genes for both traits are 30 map units apart on the same autosome, what is the probability that a progeny mouse indicated by ? will show both traits. Probability ? shows both traits._Explanation / Answer
Please find thr answers below:
Answer 1: Genotype Dd (since the mother and father are both showing pure type genotypes, the offspring mouse would be heterozygous in nature)
Answer 2: 100% (according to the phenomenon of linkage, two genes located on same chromosome must be located more than 30 mu apart to be inherited as independent units and undergo crossing over and recombination. Since these genes are located only 30 mu apart, they will be linked to each other and inherited as linked genes. Thus, all the progeny will havr similar heterozygous genotype)
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.