Please explain your answer and show calculations thanks For

Please explain your answer and show calculations, thanks!

For questions 1-5. a phenotypically-normal Drosophila male is crossed with a female that has pink eyes. Singed bristles and spiny legs. All of the F1 males and females are normal. An F1 female is crossed with a tester male that is homozygous (or possibly hemizygous) for the recessive allele at each gene affecting these traits, and produced 960 total test cross progeny: Which one of the following three genes, if any, is/are X-linked?________ What is the Chi-square value and degrees of freedom (df) for the above test cross data?__________ If any genes are linked, what is the gene order?___________ If any genes are linked, what is the total length of the map in question #3?_________ Which of the following four flies, if any. is known unambiguously to be heterozygous for all genes affecting this trait, with all mutant alleles on the same chromosome? A. the original parental male fly B. the original parental female fly C. the F1 female flies D. the test cross progeny with spiny legs, pink eyes, and singed bristles E. none of the above four flies is known unambiguously to be heterozygous for all genes affecting these traits, with all mutant alleles on the same chromosome.

Solution

Ans 1:

Pink eyes, singed bristles and spiny legs are all located on the X chromosomes and are X-linked traits.