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An individual heterozygous for eye color, skin color, and number of eyes mates with an individual who is homozygous recessive for all three characters; what would be the expected phenotypic ratio of their offspring?

Respuesta :

Answer:

BbGgCc  -black eyes, green skin, two eyes

BbGgcc - black eyes, green skin, one eye  

BbggCc- black eyes, white skin, two eyes  

Bbggcc-black eyes, white skin, one eye  

bbGgCc- orange eyes, green skin, two eyes  

bbGgcc- orange eyes, green skin, one eye

bbggCc- orange eyes, white skin, two eyes  

bbggcc- orange eyes, white skin, one eye

Explanation:

Complete Question -

An individual heterozygous for eye color, skin color, and number of eyes mates with an individual who is homozygous recessive for all three characters; what would be the expected phenotypic ratio of their offspring? [Hint: B = black eyes, b = orange eyes; G = green skin, g = white skin; C = two eyes, c = one eye]

Solution -

Allele for eye

B - Black Eyes

b - orange eyes

Allele for skin

G - Green skin

g - white skin

Alleles for number for eyes

C - Two eyes

c - one eyes

Genotype for  homozygous individual  for all three characters will be bbggcc

Genotype for  heterozygous individual with  for all three characters will be

BbGgCc

Now a cross between the two individuals will produce following offspring -

bbggcc * BbGgCc

BbGgCc  -black eyes, green skin, two eyes

BbGgcc - black eyes, green skin, one eye  

BbggCc- black eyes, white skin, two eyes  

Bbggcc-black eyes, white skin, one eye  

bbGgCc- orange eyes, green skin, two eyes  

bbGgcc- orange eyes, green skin, one eye

bbggCc- orange eyes, white skin, two eyes  

bbggcc- orange eyes, white skin, one eye

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