Section $2)$ There is only one answer per question on this section. A researcher and her relatives are studying the genetic linkage for three traits in Abominable Snowmen. All three traits are known to be on the largest autosomal chromosome. The three traits are Grinchy versus gregarious behaviour $(Gvvg),$ Abominable versus bumbly behaviour $(Bvvb)$ and Receding fur versus full fur $(Rvvr).$ Grinchiness is dominant to Gregarious, Abominable is dominant to bumbly and Receding is dominant to full fur. A true breeding Grinchy, Abominable, Furry snowman crossed with a true$-$breeding snow$-$woman who was Gregarious, bumbly and had receding fur A snow$-$kid from this cross then mated to a gregarious, bumbly, full furred snowman and had $1,000$ progeny who were phenotyped. The little snowmen have the following phenotypes. There is only one correct answer per question:

$\backslash$table$[[$Number$,$Traits,Genotype$],[$Generosity$,$Behaviour,Fur$],[363,$Grinchy,Abominable,Full$-$fur,$],[367,$Gregarious,Bumbly,Receding,$],[42,$Grinchy,Abominable,Receding,$],[48,$Gregarious,Bumbly,Full$-$fur,$],[2,$Grinchy,Bumbly,Full$-$fur,$],[8,$Gregarious,Abominable,Receding,$],[105,$Grinchy,Bumbly,Receding,$],[65,$Gregarious,Abominable,Full$-$fur,$]]$

What genotypes were the grandparents that led to the generation of the heterozygous parent?

A$.$ GBR$/$GBR $$ gbr$/$gbr

B$.Gb\frac{R}{G}bRgB\frac{r}{g}Br$

C$.gb\frac{R}{g}bRGB\frac{r}{G}Br$

D$.$ GbR$/$Gbr x gBr$/$gBR

E$.$ Gbr$/$Gbr x gBR$/$gBR

What is the map distance between $G$ and $B($give the corrected distance if possible$)?$

A$.5$

B$.10$

C$.18$

D$.26$

E$.28$

What is the map distance between $G$ and $R($give the corrected distance if possible?

A$.10$

B$.18$

C$.20$

D$.26$

E$.28$

If the researcher found a gene for Jollyness that happened to map in between $B$ and $R,$ what would happen to the map?

$A.$ This would only decrease the $B$ to $R$ distance

$B.$ This would only increase the $B$ to $R$ distance

C$.$ This would increase the $B$ to $R$ and $G$ to $R$ distance but not $B$ to $G$

$D.$ This would increase the $B$ to $R,G$ to $R$ and $B$ to $G$ distances.

$E.$ This would decrease the $B$ to $G$ and $G$ to $R$ distances while increasing the $B$ to R distance.

From the above $1000$ little snowmen, what is the genotype of a double crossover individual between $G$ and $R?$

A$.$ GBR$/$gbr

B$.gB\frac{R}{g}br$

C$.gB\frac{r}{g}br$

D$.$ GBr$/$gbr

E$.$ GbR$/$gbr