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Dihybrid Crosses

Dihybrid Crosses. Black Rhino. = short prehensile lip = long prehensile lip = normal ears = large ears Genotype of parents P1 PP,Ee P2 Pp,ee. P. p. E. e. P. E. P. e. P. E. P. e. P. e. P. e. p. e. p. e. Answers.

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Dihybrid Crosses

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  1. Dihybrid Crosses

  2. Black Rhino = short prehensile lip = long prehensile lip = normal ears = large ears Genotype of parents P1 PP,Ee P2 Pp,ee P p E e P E P e P E P e P e P e p e p e

  3. Answers • The possible genotypes that will not produce individuals with an extra long lip or large ears will be: 1 PPEe : 1 PpEe : 2 other • The possible genotypes that will produce individuals with normal lip and large ears are: 1 PPee: 1 Ppee : 2 other • Rhinos can have up to 10 babies over their life time. However, these two Rhinos can not produce any offspring that are have prehensile lips, so none of their offspring will show both traits. • The phenotype would show a 1 normal ears and lips : 1 Large ears and normal lips ratio

  4. Burmes Python = Normal scales = Large scales = Normal Skin pigment = Albino Genotype of parents P1 Ss,Pp P2 Ss,Pp S s P p S P S p s P s p S P S p s P s p

  5. Answers • The genotypes that will produce Pythons with normal scales and pigmentation are: 1 SS,PP: 2 SS,Pp: 2 SsPP : 4 SsPp : 7 other • The genotypes that will produce Pythons that have normal scales and are albino are: 1 SS,pp: 2 Ss,pp : 13 other • The genotypes that will produce Pythons that have Large scales and normal pigment are: 1 ss,PP : 2 ss,Pp : 13 other • The genotypes that will produce Pythons that have large scales and are albino are: 1 ss,pp : 15 other • The phenotypic ratios are: 9 Normal scales and pigment : 3 Normal scales and albino : 3 Large scales and Normal pigment : 1 Large scale and albino

  6. Porcupine = Normal prehensile tail = long prehensile tail = Normal whiskers = long whiskers Genotype of parents P1 Tt,Ww P2 Tt,Ww T t W w T W T w t W t w T W T w t W t w

  7. Answers • The genotypes that will produce Porcupines with normal tails and whiskers are: 1 TT,WW: 2 TT,Ww: 2 Tt,WW : 4 Tt,Ww : 7 other • The genotypes that will produce Porcupines that have normal tails and long whiskers are: 1 TT,ww: 2 Tt,ww : 13 other • The genotypes that will produce Porcupines that have long tails and normal whiskers are: 1 tt,WW : 2 tt,Ww : 13 other • The genotypes that will produce Porcupines that have long tails and have long whiskers are: 1 tt,ww : 15 other • The phenotypic ratios are: 9 Normal tails and whiskers : 3 Normal tails and long whiskers : 3 Long tails and Normal whiskers : 1 Long tail and long whiskers

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