00:01
Hello students, labrador retrivers black, brown, golden in color are considered.
00:10
Let me consider the keynote for the given question.
00:14
When these labrida retrivers are true bread, what is the possibility of the color of the thar springs? so based on the true breed, what is the possible color of the litters that are formed by labrida retrivers? let me consider the answer for the given question.
00:38
Two genes are governing the color of labrador retrivers and three colors are being produced.
00:47
The dihybridged cross of the labrador retrivers results in 9 -3 -4 ratio, which indicates it is a incomplete dominance, that is, recessive epistatysis.
01:05
Let me consider the colors here.
01:06
Biochemical pathway of color production if we consider golden color gives rise to brown from brown we are going to have black this is b and a small letters a and b gives rise to brown color whereas capital a b b and small letters a and b gives rise to gold color that is the color indication of the genes capital a capital b indicates black color now based on this let us consider black color brown color when it is crossed you are going to get all black that is hence this is the condition one black and brown when it is crossed we are going to get all blacks now let me consider option that is second condition black and brown when they are crossed we are going to have half black and half brown then let me consider 3.
02:20
Third condition presented in the question.
02:23
Black and golden.
02:24
Color when it is crossed we are going to have golden 1 by 8 divided by 8 black and 1 divided by 8 brown...