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Shalnov [3]
3 years ago
12

Consider, pea plants, for which green color is dominant to yellow color, and two leaves are dominant to three. A cross between t

wo plants that are heterozygous green and heterozygous tall is completed. What is the phenotypic ratio? 1:1:1:1
9:3.3:1
1:3:3:9
9:1:3:3​
Biology
1 answer:
Goshia [24]3 years ago
7 0

Answer:

The phenotypic ratio is 9:3:3:1

Explanation:

<u>Available data</u>:

  • green color (G-) is dominant to yellow color (gg)
  • G allele is dominant. g allele is recessive
  • two leaves (T-) are dominant to three (tt)
  • T allele is dominant, t allele is recessive

Cross: between two plants that are heterozygous green and heterozygous tall

Parentals)       GgTt      x      GgTt

Phenotype) Green color     Green color

                    Two petals      Two petals

Gametes)  GT, Gt, gT, gt   GT, Gt, gT, gt

Punnett Square)      GT          Gt         gT         gt

                      GT    GGTT    GGTt    GgTT      GgTt

                      Gt     GGTt      GGtt     GgTT     Ggtt

                      gT    GgTT       GgTt     ggTT     ggTt

                      gt     GgTt        Ggtt       ggTt     ggtt

F1) Genotype:

    1/16 GGTT

    2/16 GGTt

    1/16 GGtt

    2/16 GgTT

    4/16 GgTt

    2/16 Ggtt

    1/16  ggTT

    2/16 ggTt

    1/16 ggtt

     <u>Phenotype</u>:

    9/16 G-T- --> Green-colored and two-leaved plant

    3/16 G-tt ----> Green-colores and three-leaved plant

    3/16 ggT---> Yelow-colores and two-leaved plant

    1/16 ggtt ---> Yeloow-colores and three-leaved plant

                     

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