Tallness (T) is dominant to dwarfness (t), while red (R) flower color is dominant to white (r). The heterozygous condition results in pink (Rr) flower color. A dwarf, red snapdragon is crossed with a plant homozygous for tallness and white flowers. What are the genotype and phenotype of the F1 individuals?
a. ttRr-dwarf and pink
b. ttrr--dwarf and white
c. TtRr--tall and red
d. TtRr--tall and pink
e. TTRR--tall and red
Tallness (T) is dominant to dwarfness (t), while red (R) flower color is dominant to white (r). The heteroz?
The answer is D.
Crossing -- dwarf red flower x homozygous tall white flower
Genotype -- (ttRR) x (TTrr)
Genotype segregation -- (t) (t) (R) (R) x (T) (T) (r) (r)
F1 generation -- All (TtRr)
Phenotype -- Tall %26amp; Pink
Reply:d
Tuesday, February 7, 2012
Tallness (T) is dominant to dwarfness (t), while red (R) flower color is dominant to white (r). The heteroz?
Labels:
flowers,
plants,
white flowers
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