A few days ago
Anonymous

Hey biology experts professionals…lol!!?

Many different genes contribute to eye colour in Lucilia cuprina. Chromosome 3 in L. cuprina has a gene for eye colour at one locus (position) and a gene for body colour at another locus. THe dyd-colour phenotypes are ‘red eye’ (wild type) and ‘white eye’. The body colour phenotypes are ‘green body’ (wild type) and ‘rusty body’. Pure-breeding red eye/green body flies are crossed with pure-breeding white eye/rusty body flies. This is the parental cross.

QUESTION: Can you please help me to create a Punnett Square for the parental cross. (a punnett square is a table set up to assist in working out the genetic combinations in offspring). And then could you please help me to make a list of the possible genotypes you would expect from this cross. Then, decide on the phenotype associated with each genotype and include it in the list.

Top 2 Answers
A few days ago
Anonymous

Favorite Answer

follow this up:

we must first have the rules in writing dominance (as uppercased) and recessive (as lowercased).

So here it goes;

R=red eye

r=white eye

——————

G=green body

g=rusty body

——————

Parent plants

Red eyed and Green bodied X white and rusty

RRGG X rrgg

RG X rg

=(dihybrid F1 offspring) RrGg > then we’ll let it self-fertilize

so here, we’re gonna make a chart.

make a 4×4 box, having 16 squares.

let’s visualize it like this

RrGg

after self-fertilization

l

l

EGGS

1/4RG .. 1/4 Rg …1/4 rG.. 1/4 rg

……———————–

S… l…….l……l……l……l

P….———————–

E….l…….l……l……l…..

R…————————

M…l…….l……l……l……

……————————

…… l…….l……l……l……l

each of the box must have same

..oohh..wait..it’s hard to explain ..i’ll upload it in a pic..wait

eli here is the link. it is hard to explain w/o messenger..but i hope this’ll help.

http://i198.photobucket.com/albums/aa298…

————————

as long as there are dominants, they rule over the recessive traits.

so, count them all..(i counted it for you)

RRGG – 1/16

red eyed, green body

RRGg – 2/16

red eyed, green body

RrGG – 2/16

red eyed, green body

RRgg – 1/16

red eyed, rusty body

RrGg – 4/16

red eyed, green body

Rrgg – 2/16

red eyed, rusty body

rrGG – 1/16

white eyed, green body

rrGg – 2/16

white eyed, green body

rrgg – 1/16

white eyed, rusty body

16/16

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A few days ago
Doc Holiday
Lets see….RRGG will be red eye/green body, wwoo will be white eye/rusty body.

Your genotypes will all be the same b/c you had bure breed parents. They will all be RwGo. Now, I’m assuming the dominate traits are RR and GG.

Your phenotypes will all be red eye/green body.

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