Among dogs, short hair is dominant to long hair and dark coat color is dominant to white (albino) coat color. Assume that these two coat traits are caused by independently segregating gene pairs. For each of the crosses given below, write the most probable genotype (or genotypes if more than one answer is possible) for the parents. It is important that you select a realistic symbol set and define each symbol below.

Parental Phenotypes Phenotypes of Offspring

Short Long Short Long

Dark Dark Albino Albino

(a) dark, short × dark, long 26 24 0 0

(b) albino, short × albino, short 0 0 102 33

(c) dark, short × albino, short 16 0 16 0

(d) dark, short × dark, short 175 67 61 21

Assume that for cross (d), you were interested in determining whether fur color follows a 3:1 ratio. Set up (but do not complete the calculations) a Chi-square test for these data [fur color in cross (d)].

Question

Among dogs, short hair is dominant to long hair and dark coat color is dominant to white (albino) coat color. Assume that these two coat traits are caused by independently segregating gene pairs. For each of the crosses given below, write the most probable genotype (or genotypes if more than one answer is possible) for the parents. It is important that you select a realistic symbol set and define each symbol below.

Parental Phenotypes	Phenotypes of Offspring
	Short	Long	Short	Long
	Dark	Dark	Albino	Albino
(a) dark, short × dark, long	26	24	0	0
(b) albino, short × albino, short	0	0	102	33
(c) dark, short × albino, short	16	0	16	0
(d) dark, short × dark, short	175	67	61	21

Assume that for cross (d), you were interested in determining whether fur color follows a 3:1 ratio. Set up (but do not complete the calculations) a Chi-square test for these data [fur color in cross (d)].

Quizplus · Accepted Answer

The Answer of Among dogs, short hair is dominant to long hair and dark coat color is dominant to white (albino) coat color. Assume that these two coat traits are caused by independently segregating gene pairs. For each of the crosses given below, write the most probable genotype (or genotypes if more than one answer is possible) for the parents. It is important that you select a realistic symbol set and define each symbol below.

Parental Phenotypes	Phenotypes of Offspring
	Short	Long	Short	Long
	Dark	Dark	Albino	Albino
(a) dark, short × dark, long	26	24	0	0
(b) albino, short × albino, short	0	0	102	33
(c) dark, short × albino, short	16	0	16	0
(d) dark, short × dark, short	175	67	61	21

Assume that for cross (d), you were interested in determining whether fur color follows a 3:1 ratio. Set up (but do not complete the calculations) a Chi-square test for these data [fur color in cross (d)].

Among Dogs, Short Hair Is Dominant to Long Hair and Dark